Natural Resources
Conservation Service
Major Land Resource Area 013X
Major Land Resource Area
Accessed: 05/11/2026
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Next, learn more about the selected ecological site group and its characteristic dynamics by browsing the ecological site group description and exploring alternative state and transition model formats.
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Viewing 13 of 13
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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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
-
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 is on east slope of North Cascade Mountains.
- Site is at lower elevations, typically 1,000 to 3,500 feet above sea level but as much as 5,000 feet in some areas. The soils on this site are dry by summer
- Site is common on many landforms, including mountain slopes, valley sides, stream terraces, and ridgelines. High-frequency/ low-intensity wildfire plays an important role in plant community dynamics. Douglas-fir and ponderosa pine are the most commontrees, and pinegrass is common in the understory. If yes, the site is Frigid/Xeric Coniferous (F003XN927WA).
Briefcase
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Ecological site groups
Major Land Resource Areas
Ecological site group photos
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Additional water
Uplands
Perennial water
013XESG08 – Riparian
013XESG08 – Riparian
Ephemeral water
013XESG01 – Bottoms
013XESG01 – Bottoms
>75% bedrock outcrop
013XESG07 – Outcrops
013XESG07 – Outcrops
<75% bedrock outcrop
Surface SAR >8 or subsurface EC >8 or surface EC >4
013XESG09 – Saline Hills
013XESG09 – Saline Hills
Surface SAR <8 and subsurface EC <8 and surface EC <4
EC >1.5 surface or >2 subsurface
013XESG10 – Saline Uplands
013XESG10 – Saline Uplands
EC <1.5 and <2 subsurface
Slope >35% & >40% surface rock
013XESG02 – Breaks
013XESG02 – Breaks
Slope <35% or <40% surface rock
Depth <30cm
013XESG13 – Very Shallow
013XESG13 – Very Shallow
Depth: 30-55cm
013XESG12 – Shallow
013XESG12 – Shallow
Depth > 55cm
Rock >30% surface or >30% subsurface
013XESG04 – Deep Rocky
013XESG04 – Deep Rocky
Rock <30% and <30% subsurface
Clay >30% surface or >35% subsurface
013XESG03 – Clay Uplands
013XESG03 – Clay Uplands
Clay <30% surface and <35% subsurface
Sand >75% or texture is loamy sand or sandier in surface & subsurface
013XESG11 – Sandy Uplands
013XESG11 – Sandy Uplands
Sand <75% or texture is sandy loam or finer in surface & subsurface
Clay <20% or texture is sandy loam or sandier in surface
013XESG06 – Loamy Uplands
013XESG06 – Loamy Uplands
Clay >20% or texture is finer than sandy loam in surface
013XESG05 – Finer Uplands
013XESG05 – Finer Uplands
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Ecological site group keys
MLRA 13
I.
Additional water
II.
Uplands
B.
<75% bedrock outcrop
2
Surface SAR <8 and subsurface EC <8 and surface EC <4
ii.
EC <1.5 and <2 subsurface
b.
Slope <35% or <40% surface rock
3)
Depth > 55cm
b)
Rock <30% and <30% subsurface
(2)
Clay <30% surface and <35% subsurface
(a)
Sand >75% or texture is loamy sand or sandier in surface & subsurface
... 013XESG11 – Sandy Uplands
(b)
Sand <75% or texture is sandy loam or finer in surface & subsurface
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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