Natural Resources
Conservation Service
Major Land Resource Area 022B
Major Land Resource Area
Accessed: 06/12/2026
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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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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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
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ProvisionalF022BF202CAWest-Side, Steep (15% or greater), Ash-influenced, Frigid Gravelly (FFD<100) MountainsiKey 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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
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ProvisionalF022BF203CAEast Side, Steep (15% or greater), Ash-Influenced, Frigid Gravelly (FFD<100) Mountainsi
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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
-
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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
-
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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
-
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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
-
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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
-
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
- MOUNT RAINIER NATIONAL PARK
- Site is forested, and more than 25 percent is covered with trees
- Site is composed primarily of coniferous tree species. If yes, go to “m.” m. Site commonly is at an elevation of 1,600 to 4,600 feet above sea level, in the southern Washington Cascades. Western hemlock typically in the overstory.
- Site commonly is at an elevation of 1,800 to 5,700 feet above sea level, in the southern Washington Cascades
- Site is in swales and on terraces and debris aprons of glacial valley walls. A seasonal high water table is at a depth of 10 to 20 inches from the soil surface some time during the growing season. Common overstory species are Pacific silver fir, western redcedar, bigleaf maple, western hemlock, and red alder. Understory species include devilsclub, vine maple. Southern Washington Cascades Moist Low Cryic Coniferous Forest (F003XN946WA).
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Ecological site groups
Major Land Resource Areas
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Primarily frigid soil temperatures dominate: F – Frigid (Southern Montane Forest (Frigid soil temps mainly)
Primarily mesic soil temperatures dominate: G – Mesic (Low Southern Montane Forest (Mesic soil temps mainly)
USFS land -R022BF750CA (see Future projects)
Frost-Free Days 100 or greater
F022BF201CA – Ash-Influenced, warm (FFD >100) rocky mountains
F022BF201CA – Ash-Influenced, warm (FFD >100) rocky mountains
Slopes 15% or less
F022BF204CA – Low Slope (15% or less) Hills and Mountains
F022BF204CA – Low Slope (15% or less) Hills and Mountains
Not as above
Soils primarily found on the East-side of the Cascade Mountains
F022BF203CA – East Side, Steep (15% or greater), Ash-Influenced, Frigid Gravelly (FFD<100) Mountains
F022BF203CA – East Side, Steep (15% or greater), Ash-Influenced, Frigid Gravelly (FFD<100) Mountains
Soils primarily found on the West-side of the Cascade Mountains
F022BF202CA – West-Side, Steep (15% or greater), Ash-influenced, Frigid Gravelly (FFD<100) Mountains
F022BF202CA – West-Side, Steep (15% or greater), Ash-influenced, Frigid Gravelly (FFD<100) Mountains
USFS land - R022BG750CA (see Future projects)
Lava Plateaus
F022BG200CA – Mesic Lava Plateaus, Low Sloping (15% or less), <25 inch precip
F022BG200CA – Mesic Lava Plateaus, Low Sloping (15% or less), <25 inch precip
Not as above, Precipitation averages over 60 inches
F022BG203CA – Mesic, High Precip (>60 inches) Ash-Influenced Mountains
F022BG203CA – Mesic, High Precip (>60 inches) Ash-Influenced Mountains
Not as above, Frost-free days under 100
F022BG202CA – Mesic, Cool (FFD<100) Ash-Influenced Mountains
F022BG202CA – Mesic, Cool (FFD<100) Ash-Influenced Mountains
Not as above
Frost-free days over 100
F022BG201CA – Mesic Ash-Influenced Mountains
F022BG201CA – Mesic Ash-Influenced Mountains
Not as above – R022BG999CA (see Future projects)
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Ecological site group keys
Southern Cascade Mountains
I.
Primarily frigid soil temperatures dominate: F – Frigid (Southern Montane Forest (Frigid soil temps mainly)
A.
USFS land -R022BF750CA (see Future projects)
D.
Not as above
1
Soils primarily found on the East-side of the Cascade Mountains
... F022BF203CA – East Side, Steep (15% or greater), Ash-Influenced, Frigid Gravelly (FFD<100) Mountains
2
Soils primarily found on the West-side of the Cascade Mountains
... F022BF202CA – West-Side, Steep (15% or greater), Ash-influenced, Frigid Gravelly (FFD<100) Mountains
II.
Primarily mesic soil temperatures dominate: G – Mesic (Low Southern Montane Forest (Mesic soil temps mainly)
A.
USFS land - R022BG750CA (see Future projects)
C.
Not as above, Precipitation averages over 60 inches
... F022BG203CA – Mesic, High Precip (>60 inches) Ash-Influenced Mountains
D.
Not as above, Frost-free days under 100
... F022BG202CA – Mesic, Cool (FFD<100) Ash-Influenced Mountains
E.
Not as above
2
Not as above – R022BG999CA (see Future projects)
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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