Natural Resources
Conservation Service
Major Land Resource Area 022A
Major Land Resource Area
Accessed: 05/20/2026
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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
- 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).
-
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).
-
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
Ecological site group photos
Tools
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Interactive key
valley bottoms, basin floors, terraces
R022AW001CAESG – Valley Bottoms, Basin Floors, and Terraces
R022AW001CAESG – Valley Bottoms, Basin Floors, and Terraces
alluvial fans
F022AW002CAESG – Alluvial Fans
F022AW002CAESG – Alluvial Fans
mountains
mesic temp regime
frigid temp regime
cryic temp regime
F022AW013CAESG – Cryic Mountains
F022AW013CAESG – Cryic Mountains
<40" ppt
>40" ppt
<20" depth
F022AW003CAESG – Shallow Mesic Mountains <40"ppt
F022AW003CAESG – Shallow Mesic Mountains <40"ppt
>20" depth
F022AW004CAESG – Mesic Mountains <40" ppt
F022AW004CAESG – Mesic Mountains <40" ppt
<20" depth
R022AW005CAESG – Shallow Mesic Mountains >40"ppt
R022AW005CAESG – Shallow Mesic Mountains >40"ppt
20-40" depth
F022AW006CAESG – Mesic Mountains >40"ppt
F022AW006CAESG – Mesic Mountains >40"ppt
>40" depth
F022AW007CAESG – Deep Mesic Mountains >40"ppt
F022AW007CAESG – Deep Mesic Mountains >40"ppt
<40" ppt
>40" ppt
<20" depth
F022AW008CAESG – Shallow Frigid Mountains <40"ppt
F022AW008CAESG – Shallow Frigid Mountains <40"ppt
20-40" depth
F022AW009CAESG – Frigid Mountains <40"ppt
F022AW009CAESG – Frigid Mountains <40"ppt
>40" depth
F022AW010CAESG – Deep Frigid Mountains <40"ppt
F022AW010CAESG – Deep Frigid Mountains <40"ppt
<40" depth
F022AW011CAESG – Frigid Mountains >40"ppt
F022AW011CAESG – Frigid Mountains >40"ppt
>40" depth
F022AW012CAESG – Deep Frigid Mountains >40"ppt
F022AW012CAESG – Deep Frigid Mountains >40"ppt
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Ecological site group keys
MLRA 22A
I.
valley bottoms, basin floors, terraces
... R022AW001CAESG – Valley Bottoms, Basin Floors, and Terraces
III.
mountains
A.
mesic temp regime
1
<40" ppt
2
>40" ppt
B.
frigid temp regime
1
<40" ppt
2
>40" ppt
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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