Natural Resources
Conservation Service
Major Land Resource Area 006X
Major Land Resource Area
Accessed: 04/21/2026
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Description
Stretching from northern Washington to southern Oregon, the Cascade Mountains, Eastern Slope, spans the entirety of the mountain slopes, foothills, elevated plateaus and valleys on the eastern slopes of the Cascade mountains. This MLRA is a transitional area between the Cascade Mountains to the west and the lower lying Columbia Basalt Plateau to the east. Situated in the rainshadow of the Cascade Crest, this MLRA receives less precipitation than portions of the cascades further west and greater precipitation than the basalt plateaus to the east. Geologically, the majority of the MLRA is dominated by Miocene volcanic rocks while the northern portion is dominated by Pre-Cretaceous metamorphic rocks and the southern portion is blanketed with a thick mantle of ash and pumice from Mount Mazama. The soils in the MLRA dominantly have a mesic, frigid, or cryic soil temperature regime, a xeric soil moisture regime, and mixed or glassy mineralogy. They generally are moderately deep to very deep, well drained, and loamy or ashy. Biologically, the MLRA is dominated by coniferous forest, large expanses of which are dominated by ponderosa pine, Douglas-fir or lodgepole pine. Areas experiencing cooler and moister conditions include grand fir, white fir, and western larch while the highest elevations include pacific silver fir, subalpine fir and whitebark pine. Economically, timber harvest and recreation are important land uses in these forest. Historically, many of these forests would have experienced relatively frequent, low and mixed severity fire favoring the development of mature forests dominated by ponderosa pine or Douglas-fir. In the southern pumice plateau forests, less frequent, higher severity fire was common and promoted the growth of large expanses of even-aged, lodgepole forests. Further information for this MLRA is available online in the USDA publication "Land Resource Regions and Major Land Resource Areas of the United States, the Caribbean, and the Pacific Basin", accessible below.
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Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalAX006X01F101/F006XY712ORPumice Plateau, Volcanic Uplands (Ponderosa Pine / Antelope bitterbrush) 18-25 PZiKey Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalAX006X03B100/R006XB002OROregon East Cascades, Lava Plains (Ponderosa pine - Western Juniper) 12-16 PZi
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XA002WA/F006XA002WAMesic Xeric Hill Slopes and Terraces (Ponderosa Pine Hot Dry Grass)iKey Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XA003WA/F006XA003WACryic Xeric Mountain Slopes (Subalpine fir Cool Moderately Dry Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XA005WA/F006XA005WACool Frigid Xeric Mountain Slopes (Douglas-fir Cool Moderately Dry Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XA006WA/F006XA006WACold Cryic Udic Mountain Slopes (Pacific Silver fir Cold Moist Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XA007WA/F006XA007WAWarm Frigid Xeric Mountain Slopes (Douglas-fir Warm Dry Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XA008WA/F006XA008WACryic Xeric Mountain Slopes (Subalpine fir Cold Moderately Dry Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XB001WA/F006XB001WAFrigid Xeric Mountain Slopes (Douglas-fir Moderately Dry Shrub/Herb)iKey Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XB002WA/F006XB002WACold Cryic Udic Mountain Slopes (Mountain Hemlock Cold Moderately Moist Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XB003WA/F006XB003WAFrigid Xeric Mountain Slopes (Grand fir Warm Moderately Dry Low Shrub/Herb)iKey Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XB004WA/F006XB004WAMesic Xeric Foothills and Mountain Slopes (Ponderosa Pine Hot Dry Shrub Grass)iKey Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
ProvisionalF006XC001WA/F006XC001WACryic Xeric Mountain Slopes and Plateaus (Subalpine fir Cool Dry Grass)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XC002WA/F006XC002WACryic Moderately Moist Xeric Mountain Slopes (Western Hemlock Cool Moderately Moist)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XC003WA/F006XC003WACool Frigid Moist Xeric Mountain Slopes (Grand fir Cool Moist Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XD001WA/F006XD001WAFrigid Moist Xeric Ashy Slopes (Grand fir Warm Moist Shrub/Herb)iKey Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XD004WA/F006XD004WAMesic Xeric Slopes and Plateaus (Oregon White Oak-Ponderosa pine Hot Dry Herb/Shrub)iKey Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XD005WA/F006XD005WAFrigid Xeric Mountain Slopes and Plateaus (Grand fir Warm Moderately Dry Shrub)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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ProvisionalF006XD006WA/F006XD006WACold Cryic Xeric Mountain Slopes (Whitebark Pine Cold Moderately Dry Shrub/Herb)i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
-
i
Key Characteristics
- Site located north of the Columbia River.
- Within a national park soil survey or in an area joining with a national park in the Washington Cascades Range
- NORTH CASCADES NATIONAL PARK
- Site is forested and more than 25 percent is covered with trees
- Site typically is on west slope of North Cascade Mountains, but areas are throughout the mountains
- Site typically is at low elevations (below 3,200 feet above sea level). It typically is on gently sloping or flat flood plains and terraces associated with streams and rivers. It is in lower positions of glacially carved valleys in the North Cascade Mountains. Black cottonwood and red alder are common trees. Common understory plants include vine maple, salmonberry, wild ginger, and ladyfern. If yes, the site is Frigid Riparian Forest (F003XN920).
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Resides north of Columbia River.
Site has over 20% cover of trees over 13 feet in height.
Sites has less than 20% cover of trees over 13 feet in height.
Site located in Northern Cascades; northern Chelan and Okanogan Counties; CRAs 6.1, 6.2, 6.3 and 6.4; LRU A
Site located in Central Cascades; northern Kittitas and southern Chelan counties; CRA 6.5; LRU B
Site located in Southern Cascades; Kittitas, Yakima, Klickitat and eastern Skamania Counties; CRAs 6.6, 6.7 and 6.8; LRU C and D.
Site occurs in cryic temperature regime.
Site occurs in frigid temperature regime.
Site occurs in mesic temperature regime.
Site occurs in udic moisture regime.
F006XA006WA – Cold Cryic Udic Mountain Slopes (Pacific Silver fir Cold Moist Shrub/Herb)
F006XA006WA – Cold Cryic Udic Mountain Slopes (Pacific Silver fir Cold Moist Shrub/Herb)
Site occurs in xeric moisture regime, but a udic moisture subclass (xeric bordering udic).
F006XA008WA – Cryic Xeric Mountain Slopes (Subalpine fir Cold Moderately Dry Shrub/Herb)
F006XA008WA – Cryic Xeric Mountain Slopes (Subalpine fir Cold Moderately Dry Shrub/Herb)
Site occurs in xeric moisture regime.
Site occurs less than 5,000 feet elevation.
F006XA003WA – Cryic Xeric Mountain Slopes (Subalpine fir Cool Moderately Dry Shrub/Herb)
F006XA003WA – Cryic Xeric Mountain Slopes (Subalpine fir Cool Moderately Dry Shrub/Herb)
Site occurs over 5,000 feet elevation.
F006XA004WA – Cold Cryic Xeric Mountain Slopes (Subalpine fir Cold Dry Shrub)
F006XA004WA – Cold Cryic Xeric Mountain Slopes (Subalpine fir Cold Dry Shrub)
Plant community expresses a Douglas-fir and huckleberry plant association.
F006XA005WA – Cool Frigid Xeric Mountain Slopes (Douglas-fir Cool Moderately Dry Shrub/Herb)
F006XA005WA – Cool Frigid Xeric Mountain Slopes (Douglas-fir Cool Moderately Dry Shrub/Herb)
Plant community expresses a Douglas-fir and pinegrass plant association.
F006XA001WA – Cool Frigid Xeric Ashy Slopes (Douglas-fir Cool Dry Grass)
F006XA001WA – Cool Frigid Xeric Ashy Slopes (Douglas-fir Cool Dry Grass)
Plant community lacks pinegrass.
F006XA007WA – Warm Frigid Xeric Mountain Slopes (Douglas-fir Warm Dry Shrub/Herb)
F006XA007WA – Warm Frigid Xeric Mountain Slopes (Douglas-fir Warm Dry Shrub/Herb)
Site occurs predominantly on northern slopes.
F006XA007WA – Warm Frigid Xeric Mountain Slopes (Douglas-fir Warm Dry Shrub/Herb)
F006XA007WA – Warm Frigid Xeric Mountain Slopes (Douglas-fir Warm Dry Shrub/Herb)
Site occurs on more southerly slopes.
F006XA002WA – Mesic Xeric Hill Slopes and Terraces (Ponderosa Pine Hot Dry Grass)
F006XA002WA – Mesic Xeric Hill Slopes and Terraces (Ponderosa Pine Hot Dry Grass)
Site occurs in cryic temperature regime.
F006XB002WA – Cold Cryic Udic Mountain Slopes (Mountain Hemlock Cold Moderately Moist Shrub/Herb)
F006XB002WA – Cold Cryic Udic Mountain Slopes (Mountain Hemlock Cold Moderately Moist Shrub/Herb)
Site occurs in frigid temperature regime.
Site occurs in mesic temperature regime.
F006XB004WA – Mesic Xeric Foothills and Mountain Slopes (Ponderosa Pine Hot Dry Shrub Grass)
F006XB004WA – Mesic Xeric Foothills and Mountain Slopes (Ponderosa Pine Hot Dry Shrub Grass)
Site dominated by Douglas-fir.
F006XB001WA – Frigid Xeric Mountain Slopes (Douglas-fir Moderately Dry Shrub/Herb)
F006XB001WA – Frigid Xeric Mountain Slopes (Douglas-fir Moderately Dry Shrub/Herb)
Site dominated by grand fir.
F006XB003WA – Frigid Xeric Mountain Slopes (Grand fir Warm Moderately Dry Low Shrub/Herb)
F006XB003WA – Frigid Xeric Mountain Slopes (Grand fir Warm Moderately Dry Low Shrub/Herb)
Site occurs in cryic temperature regime.
Site occurs in frigid temperature regime.
Site occurs in mesic temperature regime.
Site dominated by whitebark pine.
F006XD006WA – Cold Cryic Xeric Mountain Slopes (Whitebark Pine Cold Moderately Dry Shrub/Herb)
F006XD006WA – Cold Cryic Xeric Mountain Slopes (Whitebark Pine Cold Moderately Dry Shrub/Herb)
Site dominated by subalpine fir.
F006XC001WA – Cryic Xeric Mountain Slopes and Plateaus (Subalpine fir Cool Dry Grass)
F006XC001WA – Cryic Xeric Mountain Slopes and Plateaus (Subalpine fir Cool Dry Grass)
Site dominated by western hemlock.
F006XC002WA – Cryic Moderately Moist Xeric Mountain Slopes (Western Hemlock Cool Moderately Moist)
F006XC002WA – Cryic Moderately Moist Xeric Mountain Slopes (Western Hemlock Cool Moderately Moist)
Site on 'dry river terrace' adjacent to riparian areas.
F006XD003WA – Mesic Xeric Slopes and Flood Plains (Oregon white oak-Ponderosa Pine Hot Moderately Dry Shrub)
F006XD003WA – Mesic Xeric Slopes and Flood Plains (Oregon white oak-Ponderosa Pine Hot Moderately Dry Shrub)
Site not described as above.
Site occurs in xeric moisture regime, but a udic moisture subclass (xeric bordering udic).
Site occurs in xeric moisture regime, but a typic moisture subclass.
Site aspect is northern.
F006XC003WA – Cool Frigid Moist Xeric Mountain Slopes (Grand fir Cool Moist Shrub/Herb)
F006XC003WA – Cool Frigid Moist Xeric Mountain Slopes (Grand fir Cool Moist Shrub/Herb)
Site aspect is southernly.
F006XD001WA – Frigid Moist Xeric Ashy Slopes (Grand fir Warm Moist Shrub/Herb)
F006XD001WA – Frigid Moist Xeric Ashy Slopes (Grand fir Warm Moist Shrub/Herb)
Site aspect is northerly.
F006XD005WA – Frigid Xeric Mountain Slopes and Plateaus (Grand fir Warm Moderately Dry Shrub)
F006XD005WA – Frigid Xeric Mountain Slopes and Plateaus (Grand fir Warm Moderately Dry Shrub)
Sites aspect is more southernly.
F006XD002WA – Cool Frigid Xeric Ashy Slopes (Grand fir Cool Dry Grass)
F006XD002WA – Cool Frigid Xeric Ashy Slopes (Grand fir Cool Dry Grass)
Site contains bitterbrush and/or elk sedge.
F006XD004WA – Mesic Xeric Slopes and Plateaus (Oregon White Oak-Ponderosa pine Hot Dry Herb/Shrub)
F006XD004WA – Mesic Xeric Slopes and Plateaus (Oregon White Oak-Ponderosa pine Hot Dry Herb/Shrub)
Site contains wester hazel and/or snowberry.
F006XD003WA – Mesic Xeric Slopes and Flood Plains (Oregon white oak-Ponderosa Pine Hot Moderately Dry Shrub)
F006XD003WA – Mesic Xeric Slopes and Flood Plains (Oregon white oak-Ponderosa Pine Hot Moderately Dry Shrub)
The site occurs on uplands.
The site occurs on depressions, swales on flood plains or terraces.
Soils are very shallow in depth, less than 10 inches. Sites include: ESG R006XY001WA - Very shallow, R006XY301WA - Very shallow 16-24 PZ.
R006XY001WA – Very shallow
R006XY001WA – Very shallow
Soils are deeper than 10 inches.
Soil has a shallow depth class, less than 20 inches to restrictive horizon.
Soil is deeper than 20 inches to a restrictive horizon and have greater than 35 percent rock fragments in particle size control section.
Soil is deeper than 20 inches to restrictive horizon and has less than 35 percent rock fragments.
Site occurs on the High Prairie or Swauk Prairie of MLRA 6. ESG R006XY412WA - Shallow stony, Prairie
R006XY412WA – Shallow Stony Prairie
R006XY412WA – Shallow Stony Prairie
Site occurs approximately at 2,800 to 4,000 feet elevation; mesic temperature regime. Sites include: ESG R006XY312WA - Shallow stony, 2800-4000 feet, R006XY201WA - Dry Stony 16-24 PZ.
R006XY312WA – Shallow Stony 2800-4000 feet
R006XY312WA – Shallow Stony 2800-4000 feet
Site occurs approximately at 4,000 to 6,000 feet elevation; frigid temperature regime . Sites include: ESG R006XY112WA - Shallow stony, 4000-6000 feet, R006XY203WA - Cool Stony 16-24 PZ.
R006XY112WA – Shallow Stony 4000-6000 feet
R006XY112WA – Shallow Stony 4000-6000 feet
Site occurs approximately at 6,000 to 7,600 feet elevation; cryic temperature regime. Sites include: ESG R006XY115WA - Shallow stony, 6000-7600 feet, R006XY204WA - High Mountain Shallow 24+ PZ.
R006XY115WA – Shallow Stony 6000-7600 feet
R006XY115WA – Shallow Stony 6000-7600 feet
Site occurs approximately below 2,800 feet in elevation. Sites include: ESG R006XY726WA - Stony, dry oak, R006XY201WA - Dry Stony 16-24 PZ.
R006XY726WA – Stony Dry Oak
R006XY726WA – Stony Dry Oak
Site occurs approximately at 2,800 to 4,000 feet elevation; mesic temperature regime. Sites include: ESG R006XY226WA - Stony foothills, south aspect, bitterbrush, 2,800-4,000 feet, R006XY202WA - Stony 16-24 PZ.
R006XY226WA – Stony Foothills South Aspect bitterbrush 2800-4000 feet
R006XY226WA – Stony Foothills South Aspect bitterbrush 2800-4000 feet
Site occurs approximately at 4,000 to 6,000 feet elevation; frigid temperature regime. Sites include: ESG R006XY126WA - Stony south aspect, 4000-6000 feet, R006XY203WA - Cool Stony 16-24 PZ, R006XY702WA - Mountain Park, R006XY701WA - Mountain Shallow.
R006XY126WA – Stony South Aspect 4000-6000 feet
R006XY126WA – Stony South Aspect 4000-6000 feet
Site occurs approximately at 6,000 to 7,600 feet elevation; cryic temperature regime. Sites include: ESG R006XY165WA - Stony south aspect, 6000-7600 feet, R006XY703WA - High Mountain Park, R006XY704WA - Subalpine Park.
R006XY165WA – Stony South Aspect 6000-7600 feet
R006XY165WA – Stony South Aspect 6000-7600 feet
Site has northerly aspect. Site include: ESG R006XY450WA - North aspect, Prairie, R006XY103WA - Cool Loamy 16-24 PZ.
R006XY450WA – North Aspect Prairie
R006XY450WA – North Aspect Prairie
Site not as above. Sites include: ESG R006XY430WA - Loamy, prairie, R006XY102WA - Loamy 16-24 PZ.
R006XY430WA – Loamy Prairie
R006XY430WA – Loamy Prairie
Soils are hydric and saturated to the surface.
R006XB100OR – Wet Meadow
R006XB100OR – Wet Meadow
Soil are non-hydric and not saturated to the surface, but plants are water tolerant.
Site elevation is approximately 4,000 to 6,000 feet; frigid temperature regime.
R006XB102OR – Cold Wet Meadow
R006XB102OR – Cold Wet Meadow
Site elevation is approximately 6,000 to 7,600 feet; cryic temperature regime.
F006XY706OR – Cryic Coniferous Flood Plain
F006XY706OR – Cryic Coniferous Flood Plain
Resides south of Columbia River.
Soils mantled with thick coarse pumice and ash, Cryic soil temperature regime.
Not as above.
Aquic soil moisture regime or water table within 60" of the soil surface -
Xeric soil moisture regime, no water table within 60" of soil surface -
Forested site
Meadow or marsh site
Sites concentrated around the east flanks of Crater lake
Not as above
Meadow or riparian site -
Forest or upland site.
Frigid temperature regime, elevations between 2,800 and 3,500 ft
R006XB100OR – Wet Meadow
R006XB100OR – Wet Meadow
Cryic temperature regime, elevations above 3,500 ft
Xeric soil moisture regime.
Not as above.
Site occurring in northern Oregon within the Eastern Columbia Gorge maritime micro climate -
Site occurring south of the Eastern Columbia Gorge micro climate -
Mean annual precipitation less than 20" (East of Hood river valley, below ~ 2,000 ft elevation, increasing to ~ 2,500 ft from Dufur south)
Mean annual precipitation 20" or greater, location not as above
Soil temperature regime mesic
Soil temperature regime frigid
Aridic soil moisture regime -
Udic soil moisture regime (see MLRA 003X for relevant sites).
Sites occupying hills, basins and lakebed terraces
Sites occupying dunes
Occurring on various soil types, loamy sand, sandy loam, peat, muck
AX006X02F100 – Pumice Plateau Wet Basins (Lodgepole Pine - Douglas Spirea)
AX006X02F100 – Pumice Plateau Wet Basins (Lodgepole Pine - Douglas Spirea)
Soils moderately well drained
Soils somewhat poorly drained
Soils poorly drained
Semi-impermeable layer at 20" deep, restricts some root activity
R006XB010OR – Meadow Fan 14-26 PZ
R006XB010OR – Meadow Fan 14-26 PZ
Not as above
R006XB011OR – Meadow Knoll 14-26 PZ
R006XB011OR – Meadow Knoll 14-26 PZ
Ponding rare, clayey soils
R006XB009OR – Wet Pumice Terrace 14-26 PZ
R006XB009OR – Wet Pumice Terrace 14-26 PZ
Ponding frequent, loamy soils
R006XB012OR – Dry Pumice Meadow 14-26 PZ
R006XB012OR – Dry Pumice Meadow 14-26 PZ
Water table below the effective rooting depth for part of the growing season
R006XB013OR – Wet Pumice Meadow 14-26 PZ
R006XB013OR – Wet Pumice Meadow 14-26 PZ
Water table at or near the surface for most of the year
Soil surface dry by late in the growing season
R006XB014OR – Meadow Swale 14-26 PZ
R006XB014OR – Meadow Swale 14-26 PZ
Soil surface moist year round
R006XB016OR – Wet Marsh 14-26 PZ
R006XB016OR – Wet Marsh 14-26 PZ
Transitional site between Meadow Swale 14-26 PZ and Wet Marsh 14-26 PZ, no known abiotic differences
R006XB015OR – Marshy Swale 14-26 PZ
R006XB015OR – Marshy Swale 14-26 PZ
Site occupying south aspects on buttes
F006XY701OR – East Crater Lake Pumice Buttes
F006XY701OR – East Crater Lake Pumice Buttes
Not as above
Site occupying high elevation stratovolcano slopes
F006XY707OR – East Crater Lake Stratovolcano Slopes
F006XY707OR – East Crater Lake Stratovolcano Slopes
Site occupying ash flows or alluvial fans
Slopes flat to gentle, occupying low landscape positions in basins and drainages
Not as above
Soils excessively drained
F006XY702OR – East Crater Lake Pumice Drainages
F006XY702OR – East Crater Lake Pumice Drainages
Soils somewhat excessively drained
F006XY704OR – East Crater Lake Pumice Basins
F006XY704OR – East Crater Lake Pumice Basins
Site found on all aspects
F006XY703OR – East Crater Lake Gentle Pumice Slopes
F006XY703OR – East Crater Lake Gentle Pumice Slopes
Site found primarily on north or south aspects
Site primarily found on south aspects
F006XY700OR – East Crater Lake Pumice South Slopes
F006XY700OR – East Crater Lake Pumice South Slopes
Site primarily found on moderate to steep north aspects
F006XY705OR – East Crater Lake Steep North Slopes
F006XY705OR – East Crater Lake Steep North Slopes
Mean annual precipitation 20 - 40", slopes gentle to steep
AX006X01F100 – Pumice Plateau, Volcanic Uplands and Mountainbases (Ponderosa Pine / Greenleaf manzanita - Snowbrush) 20-30 PZ
AX006X01F100 – Pumice Plateau, Volcanic Uplands and Mountainbases (Ponderosa Pine / Greenleaf manzanita - Snowbrush) 20-30 PZ
Mean annual precipitation 18 - 25", slopes flat to gentle
Slopes nearly flat, site occupying low landscape positions
AX006X01F102 – Pumice Plateau, Flats and Frost Pockets (Lodgepole Pine / Antelope bitterbrush) 18-25 PZ
AX006X01F102 – Pumice Plateau, Flats and Frost Pockets (Lodgepole Pine / Antelope bitterbrush) 18-25 PZ
Slopes gentle to moderate, site occupying upslope landscape positions
AX006X01F101 – Pumice Plateau, Volcanic Uplands (Ponderosa Pine / Antelope bitterbrush) 18-25 PZ
AX006X01F101 – Pumice Plateau, Volcanic Uplands (Ponderosa Pine / Antelope bitterbrush) 18-25 PZ
Site occurring on floodplains and low stream terraces
F006XY706OR – Cryic Coniferous Flood Plain
F006XY706OR – Cryic Coniferous Flood Plain
Not as above
Site does not experience spring ponding, water table 12 - 24"
Site experiences spring ponding
Site occurs largely in the Deschutes basin, willow dominated
R006XB102OR – Cold Wet Meadow
R006XB102OR – Cold Wet Meadow
Site occurs largely in the Klamath and Great basins, California larkspur dominated, see MLRA 21 Wet Meadow 14-40 PZ site
Soil surface texture clay loam or clay, ( > 35% clay, found only toward the southern extent of east gorge Oregon white oak in and around the Warm Springs Reservation)
R006XA310OR – Juniper-Oak Clayey
R006XA310OR – Juniper-Oak Clayey
Soil surface texture courser than above (typically loam, silt loam or fine sandy loam, < 35% clay)
Slope < 15 %, (soils deep to very deep)
R006XA300OR – Loamy 14-20 PZ
R006XA300OR – Loamy 14-20 PZ
Slope > 15 %, (soils shallow to deep)
Sites found on south and west aspects
R006XA200OR – South Slopes 14-20 PZ
R006XA200OR – South Slopes 14-20 PZ
Sites found on north and east aspects
R006XA202OR – North Slopes 14-20 PZ
R006XA202OR – North Slopes 14-20 PZ
Soils shallow (10 - 20"), occupying exposed areas such as summits, ridgetops, balds and southerly slopes
R006XA204OR – South Slopes 20-40 PZ
R006XA204OR – South Slopes 20-40 PZ
Not as above
Site within, or just west of, the maritime zone defined by the Hood River and White Salmon Valleys
Site East of the maritime zone described above
Elevation greater than 2,500 ft, soil temperature regime Frigid
F006XA803OR – Frigid Xeric Maritime North Slopes 35-55 PZ
F006XA803OR – Frigid Xeric Maritime North Slopes 35-55 PZ
Elevation between 1,500 ft and 2,500 ft
Elevation below 1,500 ft (all of the 20 - 40 PZ ecological sites occur in this elevation zone so distinction will be more challenging here, clueing into biotic characteristics may be more helpful if soil pits are not feasible)
Slope > 30%
Slope < 30%
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
Occupying north and east aspects
F006XA803OR – Frigid Xeric Maritime North Slopes 35-55 PZ
F006XA803OR – Frigid Xeric Maritime North Slopes 35-55 PZ
Occupying south and west aspects
R006XA302OR – Steep South Slopes 20-40 PZ
R006XA302OR – Steep South Slopes 20-40 PZ
Slope > 45%
Slope < 45%
Soils moderately deep, 20 – 40”, (aspects generally south or west)
R006XA302OR – Steep South Slopes 20-40 PZ
R006XA302OR – Steep South Slopes 20-40 PZ
Soils deep, 40 – 60”, (uncommon on these steeper slopes)
R006XA304OR – Loamy 20-40 PZ
R006XA304OR – Loamy 20-40 PZ
Soils very deep, 60” + , (uncommon on these steeper slopes)
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
Slope > 30%, on south and west aspects
R006XA302OR – Steep South Slopes 20-40 PZ
R006XA302OR – Steep South Slopes 20-40 PZ
Not as above
Soils deep, 40 – 60”, (occasionally moderately deep)
R006XA304OR – Loamy 20-40 PZ
R006XA304OR – Loamy 20-40 PZ
Soils very deep, 60” +
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
Mean annual precipitation 20 – 30”, (elevation ~ 2,000 - 3,000 ft, increasing to ~ 2,500 – 3,500 ft south of Dufur)
Mean annual precipitation greater than 30”, (elevation above ~ 3,000 ft, increasing to ~ 3,500 ft south of Dufur)
Slopes > 30%, on south and west aspects
R006XA302OR – Steep South Slopes 20-40 PZ
R006XA302OR – Steep South Slopes 20-40 PZ
Not as above
R006XA304OR – Loamy 20-40 PZ
R006XA304OR – Loamy 20-40 PZ
Slope > 30%
Slope < 30%
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
Occupying north and east aspects
F006XA803OR – Frigid Xeric Maritime North Slopes 35-55 PZ
F006XA803OR – Frigid Xeric Maritime North Slopes 35-55 PZ
Occupying south and west aspects
R006XA302OR – Steep South Slopes 20-40 PZ
R006XA302OR – Steep South Slopes 20-40 PZ
Site primarily found on north or south aspects
Site found on all aspects
Site primarily found on north aspects
F006XB802OR – Mesic Xeric North Slopes 15-25 PZ
F006XB802OR – Mesic Xeric North Slopes 15-25 PZ
Site primarily found on south aspects
R006XB208OR – Shallow Slopes 14-20 PZ
R006XB208OR – Shallow Slopes 14-20 PZ
Soils shallow or very shallow (≤ 20")
Soils moderately deep to very deep (> 20")
Soils very shallow
Soils shallow
R006XA308OR – Moist Scabland 14-18 PZ
R006XA308OR – Moist Scabland 14-18 PZ
Mean annual precipitation 14 - 20"
F006XY710OR – Mesic Xeric Foothills 14-20 PZ
F006XY710OR – Mesic Xeric Foothills 14-20 PZ
Mean annual precipitation 20 - 25"
F006XY709OR – Mesic Xeric Foothills 20-25 PZ
F006XY709OR – Mesic Xeric Foothills 20-25 PZ
Mean annual precipitation less than 20"
Mean annual precipitation equal to or greater than 20"
Soils moderately deep to very deep (20" +), abundant fine fuels, frequent surface fires common
AX006X03B101 – Oregon East Cascades, Outwash Plains and Volcanic Uplands (Ponderosa pine / Antelope bitterbrush / Idaho Fescue) 14-18 PZ
AX006X03B101 – Oregon East Cascades, Outwash Plains and Volcanic Uplands (Ponderosa pine / Antelope bitterbrush / Idaho Fescue) 14-18 PZ
Soils shallow to moderately deep (10 - 40"), fine fuels limit fire regime to moderately frequent surface and mixed fires
AX006X03B100 – Oregon East Cascades, Lava Plains (Ponderosa pine - Western Juniper) 12-16 PZ
AX006X03B100 – Oregon East Cascades, Lava Plains (Ponderosa pine - Western Juniper) 12-16 PZ
Mean annual precipitation 20 - 30", shade tolerant conifers uncommon in understory
AX006X03C105 – Oregon East Cascades, Volcanic Uplands and Mountainbases (Ponderosa pine - Douglas-fir - (Grand fir) / Snowbrush) 20-30 PZ
AX006X03C105 – Oregon East Cascades, Volcanic Uplands and Mountainbases (Ponderosa pine - Douglas-fir - (Grand fir) / Snowbrush) 20-30 PZ
Mean annual precipitation 30 - 40", shade tolerant conifers common in understory
AX006X04C100 – East Cascades, Mid-Elevation Glaciated Mountainflanks (Douglas-fir - Ponderosa pine - Grand fir / Giant Chinquapin) 30-40 PZ
AX006X04C100 – East Cascades, Mid-Elevation Glaciated Mountainflanks (Douglas-fir - Ponderosa pine - Grand fir / Giant Chinquapin) 30-40 PZ
Soils very shallow to shallow (0-20")
R006XA217OR – Very Shallow Pumice Terrace 8-11 PZ
R006XA217OR – Very Shallow Pumice Terrace 8-11 PZ
Not as above
Soils moderately deep (20-40")
R006XA213OR – Pumice Terrace 8-10 PZ
R006XA213OR – Pumice Terrace 8-10 PZ
Soils deep to very deep (40"+)
R006XA212OR – Forested Sandy Loam 8-11 PZ
R006XA212OR – Forested Sandy Loam 8-11 PZ
Elevation less than 4400 ft
Elevation 4400 ft or greater
Frost free days 85-95
R006XA214OR – Forested Pumice Dunes 8-11 PZ
R006XA214OR – Forested Pumice Dunes 8-11 PZ
Frost free days 45-55
R006XA219OR – Juniper Dunes 8-10 PZ
R006XA219OR – Juniper Dunes 8-10 PZ
Soils deep (40-60"), slopes gentle to moderate (15-35%)
R006XA218OR – Juniper Sandy Slopes 8-11 PZ
R006XA218OR – Juniper Sandy Slopes 8-11 PZ
Soils very deep (60"+), slopes gentle (2-20%)
R006XA216OR – Forested Shrubby Dunes 8-11 PZ
R006XA216OR – Forested Shrubby Dunes 8-11 PZ
Long term average mean annual precipitation
- No filter
- 25 – 30cm (10 – 12in)
- 30 – 35cm (12 – 14in)
- 35 – 40cm (14 – 16in)
- 40 – 50cm (16 – 20in)
- 50 – 60cm (20 – 24in)
- 60 – 80cm (24 – 31in)
- 80 – 100cm (31 – 39in)
- 100 – 120cm (39 – 47in)
—
cm
Long term average frost free days
- No filter
- 0 – 30days
- 30 – 50days
- 50 – 70days
- 70 – 90days
- 90 – 110days
- 110 – 130days
- 130 – 150days
- 150 – 170days
—
days
- No filter
- 0 – 200m (0 – 700ft)
- 200 – 400m (700 – 1300ft)
- 400 – 600m (1300 – 2000ft)
- 600 – 800m (2000 – 2600ft)
- 800 – 1000m (2600 – 3300ft)
- 1000 – 1200m (3300 – 3900ft)
- 1200 – 1400m (3900 – 4600ft)
- 1400 – 1600m (4600 – 5200ft)
- 1600 – 1800m (5200 – 5900ft)
- 1800 – 2000m (5900 – 6600ft)
- 2000 – 2200m (6600 – 7200ft)
—
m
- No filter
- 0 – 3%
- 3 – 5%
- 5 – 10%
- 10 – 15%
- 15 – 20%
- 20 – 25%
- 25 – 30%
- 30 – 35%
- 35 – 40%
- 40 – 45%
- 45 – 50%
- 50 – 60%
- 60 – 70%
- 70 – 80%
- 80 – 90%
- 90 – 100%
—
%
- No filter
- Alluvial fan
- Ash flow
- Basin floor
- Bench
- Butte
- Canyon
- Cinder cone
- Cirque floor
- Depression
- Drainageway
- Dune
- Escarpment
- Flood plain
- Hill
- Hillside or mountainside
- Hillslope
- Lake terrace
- Lava flow
- Lava plain
- Moraine
- Mountain slope
- Outwash plain
- Outwash terrace
- Plain
- Plateau
- Pyroclastic flow
- Ridge
- Sand sheet
- Scarp slope
- Stream terrace
- Structural bench
- Terrace
- Volcanic field
- No filter
- Andesite
- Basalt
- Dacite
- Diatomite
- Pumice
- Sedimentary, unspecified
- Tuff, unspecified
- Volcanic and sedimentary
- Volcanic, unspecified
- No filter
- Alluvium
- Ash flow (pyroclastic)
- Colluvium
- Diatomaceous earth
- Eolian deposits
- Eolian sands
- Glaciofluvial deposits
- Loess
- Mudflow deposits
- Outwash
- Pumice
- Residuum
- Slope alluvium
- Volcanic ash
Soil surface texture
- No filter
- Clay
- Coarse sandy loam
- Fine sandy loam
- Loam
- Loamy coarse sand
- Loamy fine sand
- Loamy sand
- Sand
- Silt
- Silty clay loam
- Silt loam
- Sandy loam
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Ecological site keys
MLRA 6 - North of the Columbia River
I.
Resides north of Columbia River.
A.
Site has over 20% cover of trees over 13 feet in height.
1
Site located in Northern Cascades; northern Chelan and Okanogan Counties; CRAs 6.1, 6.2, 6.3 and 6.4; LRU A
i.
Site occurs in cryic temperature regime.
a.
Site occurs in udic moisture regime.
... F006XA006WA – Cold Cryic Udic Mountain Slopes (Pacific Silver fir Cold Moist Shrub/Herb)
b.
Site occurs in xeric moisture regime, but a udic moisture subclass (xeric bordering udic).
... F006XA008WA – Cryic Xeric Mountain Slopes (Subalpine fir Cold Moderately Dry Shrub/Herb)
c.
Site occurs in xeric moisture regime.
1)
Site occurs less than 5,000 feet elevation.
... F006XA003WA – Cryic Xeric Mountain Slopes (Subalpine fir Cool Moderately Dry Shrub/Herb)
2)
Site occurs over 5,000 feet elevation.
... F006XA004WA – Cold Cryic Xeric Mountain Slopes (Subalpine fir Cold Dry Shrub)
ii.
Site occurs in frigid temperature regime.
a.
Plant community expresses a Douglas-fir and huckleberry plant association.
... F006XA005WA – Cool Frigid Xeric Mountain Slopes (Douglas-fir Cool Moderately Dry Shrub/Herb)
b.
Plant community expresses a Douglas-fir and pinegrass plant association.
... F006XA001WA – Cool Frigid Xeric Ashy Slopes (Douglas-fir Cool Dry Grass)
c.
Plant community lacks pinegrass.
... F006XA007WA – Warm Frigid Xeric Mountain Slopes (Douglas-fir Warm Dry Shrub/Herb)
iii.
Site occurs in mesic temperature regime.
a.
Site occurs predominantly on northern slopes.
... F006XA007WA – Warm Frigid Xeric Mountain Slopes (Douglas-fir Warm Dry Shrub/Herb)
b.
Site occurs on more southerly slopes.
... F006XA002WA – Mesic Xeric Hill Slopes and Terraces (Ponderosa Pine Hot Dry Grass)
2
Site located in Central Cascades; northern Kittitas and southern Chelan counties; CRA 6.5; LRU B
i.
Site occurs in cryic temperature regime.
... F006XB002WA – Cold Cryic Udic Mountain Slopes (Mountain Hemlock Cold Moderately Moist Shrub/Herb)
ii.
Site occurs in frigid temperature regime.
a.
Site dominated by Douglas-fir.
... F006XB001WA – Frigid Xeric Mountain Slopes (Douglas-fir Moderately Dry Shrub/Herb)
b.
Site dominated by grand fir.
... F006XB003WA – Frigid Xeric Mountain Slopes (Grand fir Warm Moderately Dry Low Shrub/Herb)
iii.
Site occurs in mesic temperature regime.
... F006XB004WA – Mesic Xeric Foothills and Mountain Slopes (Ponderosa Pine Hot Dry Shrub Grass)
3
Site located in Southern Cascades; Kittitas, Yakima, Klickitat and eastern Skamania Counties; CRAs 6.6, 6.7 and 6.8; LRU C and D.
i.
Site occurs in cryic temperature regime.
a.
Site dominated by whitebark pine.
... F006XD006WA – Cold Cryic Xeric Mountain Slopes (Whitebark Pine Cold Moderately Dry Shrub/Herb)
b.
Site dominated by subalpine fir.
... F006XC001WA – Cryic Xeric Mountain Slopes and Plateaus (Subalpine fir Cool Dry Grass)
c.
Site dominated by western hemlock.
... F006XC002WA – Cryic Moderately Moist Xeric Mountain Slopes (Western Hemlock Cool Moderately Moist)
ii.
Site occurs in frigid temperature regime.
a.
Site on 'dry river terrace' adjacent to riparian areas.
... F006XD003WA – Mesic Xeric Slopes and Flood Plains (Oregon white oak-Ponderosa Pine Hot Moderately Dry Shrub)
b.
Site not described as above.
1)
Site occurs in xeric moisture regime, but a udic moisture subclass (xeric bordering udic).
a)
Site aspect is northern.
... F006XC003WA – Cool Frigid Moist Xeric Mountain Slopes (Grand fir Cool Moist Shrub/Herb)
b)
Site aspect is southernly.
... F006XD001WA – Frigid Moist Xeric Ashy Slopes (Grand fir Warm Moist Shrub/Herb)
2)
Site occurs in xeric moisture regime, but a typic moisture subclass.
a)
Site aspect is northerly.
... F006XD005WA – Frigid Xeric Mountain Slopes and Plateaus (Grand fir Warm Moderately Dry Shrub)
b)
Sites aspect is more southernly.
... F006XD002WA – Cool Frigid Xeric Ashy Slopes (Grand fir Cool Dry Grass)
iii.
Site occurs in mesic temperature regime.
a.
Site contains bitterbrush and/or elk sedge.
... F006XD004WA – Mesic Xeric Slopes and Plateaus (Oregon White Oak-Ponderosa pine Hot Dry Herb/Shrub)
b.
Site contains wester hazel and/or snowberry.
... F006XD003WA – Mesic Xeric Slopes and Flood Plains (Oregon white oak-Ponderosa Pine Hot Moderately Dry Shrub)
B.
Sites has less than 20% cover of trees over 13 feet in height.
1
The site occurs on uplands.
i.
Soils are very shallow in depth, less than 10 inches. Sites include: ESG R006XY001WA - Very shallow, R006XY301WA - Very shallow 16-24 PZ.
... R006XY001WA – Very shallow
ii.
Soils are deeper than 10 inches.
a.
Soil has a shallow depth class, less than 20 inches to restrictive horizon.
1)
Site occurs on the High Prairie or Swauk Prairie of MLRA 6. ESG R006XY412WA - Shallow stony, Prairie
... R006XY412WA – Shallow Stony Prairie
2)
Site occurs approximately at 2,800 to 4,000 feet elevation; mesic temperature regime. Sites include: ESG R006XY312WA - Shallow stony, 2800-4000 feet, R006XY201WA - Dry Stony 16-24 PZ.
... R006XY312WA – Shallow Stony 2800-4000 feet
3)
Site occurs approximately at 4,000 to 6,000 feet elevation; frigid temperature regime . Sites include: ESG R006XY112WA - Shallow stony, 4000-6000 feet, R006XY203WA - Cool Stony 16-24 PZ.
... R006XY112WA – Shallow Stony 4000-6000 feet
4)
Site occurs approximately at 6,000 to 7,600 feet elevation; cryic temperature regime. Sites include: ESG R006XY115WA - Shallow stony, 6000-7600 feet, R006XY204WA - High Mountain Shallow 24+ PZ.
... R006XY115WA – Shallow Stony 6000-7600 feet
b.
Soil is deeper than 20 inches to a restrictive horizon and have greater than 35 percent rock fragments in particle size control section.
1)
Site occurs approximately below 2,800 feet in elevation. Sites include: ESG R006XY726WA - Stony, dry oak, R006XY201WA - Dry Stony 16-24 PZ.
... R006XY726WA – Stony Dry Oak
2)
Site occurs approximately at 2,800 to 4,000 feet elevation; mesic temperature regime. Sites include: ESG R006XY226WA - Stony foothills, south aspect, bitterbrush, 2,800-4,000 feet, R006XY202WA - Stony 16-24 PZ.
... R006XY226WA – Stony Foothills South Aspect bitterbrush 2800-4000 feet
3)
Site occurs approximately at 4,000 to 6,000 feet elevation; frigid temperature regime. Sites include: ESG R006XY126WA - Stony south aspect, 4000-6000 feet, R006XY203WA - Cool Stony 16-24 PZ, R006XY702WA - Mountain Park, R006XY701WA - Mountain Shallow.
... R006XY126WA – Stony South Aspect 4000-6000 feet
4)
Site occurs approximately at 6,000 to 7,600 feet elevation; cryic temperature regime. Sites include: ESG R006XY165WA - Stony south aspect, 6000-7600 feet, R006XY703WA - High Mountain Park, R006XY704WA - Subalpine Park.
... R006XY165WA – Stony South Aspect 6000-7600 feet
c.
Soil is deeper than 20 inches to restrictive horizon and has less than 35 percent rock fragments.
1)
Site has northerly aspect. Site include: ESG R006XY450WA - North aspect, Prairie, R006XY103WA - Cool Loamy 16-24 PZ.
... R006XY450WA – North Aspect Prairie
2)
Site not as above. Sites include: ESG R006XY430WA - Loamy, prairie, R006XY102WA - Loamy 16-24 PZ.
... R006XY430WA – Loamy Prairie
2
The site occurs on depressions, swales on flood plains or terraces.
ii.
Soil are non-hydric and not saturated to the surface, but plants are water tolerant.
b.
Site elevation is approximately 4,000 to 6,000 feet; frigid temperature regime.
... R006XB102OR – Cold Wet Meadow
c.
Site elevation is approximately 6,000 to 7,600 feet; cryic temperature regime.
... F006XY706OR – Cryic Coniferous Flood Plain
MLRA 6 - South of the Columbia River
II.
Resides south of Columbia River.
A.
Soils mantled with thick coarse pumice and ash, Cryic soil temperature regime.
1
Aquic soil moisture regime or water table within 60" of the soil surface -
2
Xeric soil moisture regime, no water table within 60" of soil surface -
B.
Not as above.
1
Meadow or riparian site -
2
Forest or upland site.
i.
Xeric soil moisture regime.
a.
Site occurring in northern Oregon within the Eastern Columbia Gorge maritime micro climate -
b.
Site occurring south of the Eastern Columbia Gorge micro climate -
ii.
Not as above.
a.
Aridic soil moisture regime -
b.
Udic soil moisture regime (see MLRA 003X for relevant sites).
LRU A (Oregon): Cascade Mountains, Eastern Slope - Oak-Conifer Foothills
I.
Mean annual precipitation less than 20" (East of Hood river valley, below ~ 2,000 ft elevation, increasing to ~ 2,500 ft from Dufur south)
A.
Soil surface texture clay loam or clay, ( > 35% clay, found only toward the southern extent of east gorge Oregon white oak in and around the Warm Springs Reservation)
... R006XA310OR – Juniper-Oak Clayey
B.
Soil surface texture courser than above (typically loam, silt loam or fine sandy loam, < 35% clay)
2
Slope > 15 %, (soils shallow to deep)
II.
Mean annual precipitation 20" or greater, location not as above
A.
Soils shallow (10 - 20"), occupying exposed areas such as summits, ridgetops, balds and southerly slopes
... R006XA204OR – South Slopes 20-40 PZ
B.
Not as above
2
Site within, or just west of, the maritime zone defined by the Hood River and White Salmon Valleys
i.
Elevation greater than 2,500 ft, soil temperature regime Frigid
... F006XA803OR – Frigid Xeric Maritime North Slopes 35-55 PZ
ii.
Elevation between 1,500 ft and 2,500 ft
a.
Slope > 30%
iii.
Elevation below 1,500 ft (all of the 20 - 40 PZ ecological sites occur in this elevation zone so distinction will be more challenging here, clueing into biotic characteristics may be more helpful if soil pits are not feasible)
a.
Slope > 45%
1)
Soils moderately deep, 20 – 40”, (aspects generally south or west)
... R006XA302OR – Steep South Slopes 20-40 PZ
3)
Soils very deep, 60” + , (uncommon on these steeper slopes)
... F006XA804OR – Mesic Xeric Maritime Foothills 30-50 PZ
b.
Slope < 45%
2)
Not as above
1
Site East of the maritime zone described above
i.
Mean annual precipitation 20 – 30”, (elevation ~ 2,000 - 3,000 ft, increasing to ~ 2,500 – 3,500 ft south of Dufur)
ii.
Mean annual precipitation greater than 30”, (elevation above ~ 3,000 ft, increasing to ~ 3,500 ft south of Dufur)
a.
Slope > 30%
LRU B (Oregon): Cascade Mountains, Eastern Slope – Ponderosa Pine Foothills
I.
Soil temperature regime mesic
A.
Site primarily found on north or south aspects
B.
Site found on all aspects
1
Soils shallow or very shallow (≤ 20")
i.
Soils very shallow
2
Soils moderately deep to very deep (> 20")
II.
Soil temperature regime frigid
A.
Mean annual precipitation less than 20"
1
Soils moderately deep to very deep (20" +), abundant fine fuels, frequent surface fires common
... AX006X03B101 – Oregon East Cascades, Outwash Plains and Volcanic Uplands (Ponderosa pine / Antelope bitterbrush / Idaho Fescue) 14-18 PZ
2
Soils shallow to moderately deep (10 - 40"), fine fuels limit fire regime to moderately frequent surface and mixed fires
... AX006X03B100 – Oregon East Cascades, Lava Plains (Ponderosa pine - Western Juniper) 12-16 PZ
B.
Mean annual precipitation equal to or greater than 20"
1
Mean annual precipitation 20 - 30", shade tolerant conifers uncommon in understory
... AX006X03C105 – Oregon East Cascades, Volcanic Uplands and Mountainbases (Ponderosa pine - Douglas-fir - (Grand fir) / Snowbrush) 20-30 PZ
2
Mean annual precipitation 30 - 40", shade tolerant conifers common in understory
... AX006X04C100 – East Cascades, Mid-Elevation Glaciated Mountainflanks (Douglas-fir - Ponderosa pine - Grand fir / Giant Chinquapin) 30-40 PZ
LRU C (Oregon): Cascade Mountains, Eastern Slope - Pumice Plateau Forest
I.
Sites concentrated around the east flanks of Crater lake
B.
Not as above
1
Site occupying high elevation stratovolcano slopes
... F006XY707OR – East Crater Lake Stratovolcano Slopes
2
Site occupying ash flows or alluvial fans
i.
Slopes flat to gentle, occupying low landscape positions in basins and drainages
ii.
Not as above
b.
Site found primarily on north or south aspects
2)
Site primarily found on moderate to steep north aspects
... F006XY705OR – East Crater Lake Steep North Slopes
II.
Not as above
A.
Mean annual precipitation 20 - 40", slopes gentle to steep
... AX006X01F100 – Pumice Plateau, Volcanic Uplands and Mountainbases (Ponderosa Pine / Greenleaf manzanita - Snowbrush) 20-30 PZ
B.
Mean annual precipitation 18 - 25", slopes flat to gentle
1
Slopes nearly flat, site occupying low landscape positions
... AX006X01F102 – Pumice Plateau, Flats and Frost Pockets (Lodgepole Pine / Antelope bitterbrush) 18-25 PZ
2
Slopes gentle to moderate, site occupying upslope landscape positions
... AX006X01F101 – Pumice Plateau, Volcanic Uplands (Ponderosa Pine / Antelope bitterbrush) 18-25 PZ
LRU D (Oregon): Cascade Mountains, Eastern Slope – Lost Forest
I.
Sites occupying hills, basins and lakebed terraces
B.
Not as above
II.
Sites occupying dunes
A.
Elevation less than 4400 ft
B.
Elevation 4400 ft or greater
1
Soils deep (40-60"), slopes gentle to moderate (15-35%)
... R006XA218OR – Juniper Sandy Slopes 8-11 PZ
LRU E (Oregon): Cascade Mountains, Eastern Slope - Pumice Plateau Basins
I.
Forested site
A.
Occurring on various soil types, loamy sand, sandy loam, peat, muck
... AX006X02F100 – Pumice Plateau Wet Basins (Lodgepole Pine - Douglas Spirea)
II.
Meadow or marsh site
A.
Soils moderately well drained
1
Semi-impermeable layer at 20" deep, restricts some root activity
... R006XB010OR – Meadow Fan 14-26 PZ
B.
Soils somewhat poorly drained
C.
Soils poorly drained
1
Water table below the effective rooting depth for part of the growing season
... R006XB013OR – Wet Pumice Meadow 14-26 PZ
2
Water table at or near the surface for most of the year
iii.
Transitional site between Meadow Swale 14-26 PZ and Wet Marsh 14-26 PZ, no known abiotic differences
... R006XB015OR – Marshy Swale 14-26 PZ
LRU G (Oregon): Cascade Mountains, Eastern Slope – Riparian and Meadow sites
II.
Cryic temperature regime, elevations above 3,500 ft
A.
Site occurring on floodplains and low stream terraces
... F006XY706OR – Cryic Coniferous Flood Plain
B.
Not as above
1
Site does not experience spring ponding, water table 12 - 24"
2
Site experiences spring ponding
ii.
Site occurs largely in the Klamath and Great basins, California larkspur dominated, see MLRA 21 Wet Meadow 14-40 PZ site
The Ecosystem Dynamics Interpretive Tool is an information system framework developed by the USDA-ARS Jornada Experimental Range, USDA Natural Resources Conservation Service, and New Mexico State University.
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