Major Land Resource Area 143X
Northeastern Mountains
Accessed: 12/21/2024
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i
Key Characteristics
- Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures
- Broad floodplain of large river system. Includes channel banks, stream terraces, and/or natural levies and associated oxbow ponds and marshes
- Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures
- Broad floodplain of large river system. Includes channel banks, stream terraces, and/or natural levies and associated oxbow ponds and marshes
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i
Key Characteristics
- Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures
- Floodplain of small river system. Includes channel banks, stream terraces, and sometimes small marshes and oxbow ponds if flooded regularly
- Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures
- Floodplain of small river system. Includes channel banks, stream terraces, and sometimes small marshes and oxbow ponds if flooded regularly
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i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
- Soils mostly muck
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
- Soils mostly muck
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
- Soils mostly peat or mucky peat
- Soil pH mostly greater than 4.5 throughout wetland
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
- Soils mostly peat or mucky peat
- Soil pH mostly greater than 4.5 throughout wetland
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
- Soils mostly peat or mucky peat
- Soil pH less than 4.5 in most of the wetland complex
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
- Soils mostly peat or mucky peat
- Soil pH less than 4.5 in most of the wetland complex
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
- Soils form a complex of poorly-drained soils on mounds and very poorly-drained soils in depressions
- Soil textures loamy or fine loamy with a densely compacted horizon within 40 inches (100 cm) of the soil surface
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
- Soils form a complex of poorly-drained soils on mounds and very poorly-drained soils in depressions
- Soil textures loamy or fine loamy with a densely compacted horizon within 40 inches (100 cm) of the soil surface
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- All soils on the site are very poorly-drained with greater than 40 inches (100 cm) of organic mucky peat deposits on the surface
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- All soils on the site are very poorly-drained with greater than 40 inches (100 cm) of organic mucky peat deposits on the surface
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
- Soils form a complex of poorly-drained soils on mounds and very poorly-drained soils in depressions
- Soil textures typically sandy or coarse-loamy without a densely compacted horizon within 40 inches (100 cm) of soil surface
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
- Soils form a complex of poorly-drained soils on mounds and very poorly-drained soils in depressions
- Soil textures typically sandy or coarse-loamy without a densely compacted horizon within 40 inches (100 cm) of soil surface
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
- All soils on the site are poorly-drained with very little or no very poorly-drained inclusions (soil textures may vary from fine to coarse)
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils poorly- and/or very poorly-drained throughout site
- Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
- Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
- All soils on the site are poorly-drained with very little or no very poorly-drained inclusions (soil textures may vary from fine to coarse)
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is fine or fine-silty
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils moderately well- to well-drained, often with somewhat poorly-drained components
- Site occurs on gentle to steep slopes (greater than 5%), typically spodosols or inceptisols lacking significant organic matter accumulation
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils moderately well- to well-drained, often with somewhat poorly-drained components
- Site occurs on gentle to steep slopes (greater than 5%), typically spodosols or inceptisols lacking significant organic matter accumulation
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils poorly drained mapped with somewhat-poorly drained components
- Site occurs on the toeslope of a large watershed with moderate to steep slopes above, where nutrients and water accumulate
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils poorly drained mapped with somewhat-poorly drained components
- Site occurs on the toeslope of a large watershed with moderate to steep slopes above, where nutrients and water accumulate
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils poorly drained mapped with somewhat-poorly drained components
- Site occurs on relatively flat expanses with less than 5% slope, rather than the toeslope of a large watershed
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils poorly drained mapped with somewhat-poorly drained components
- Site occurs on relatively flat expanses with less than 5% slope, rather than the toeslope of a large watershed
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils moderately well- to well-drained, often with somewhat poorly-drained components
- Site occurs in protected coves and drainageways with very thick, dark surface A horizon greater than 12 inches (30 cm), very high in organic matter
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
- Soils moderately well- to well-drained, often with somewhat poorly-drained components
- Site occurs in protected coves and drainageways with very thick, dark surface A horizon greater than 12 inches (30 cm), very high in organic matter
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by sandy or sandy-skeletal strata
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is finer than sandy
- Predominant soil texture is coarser than fine-silty
- Loamy surface soils underlain by sandy or sandy-skeletal strata
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is sandy or sandy-skeletal
- Soil well-drained or drier
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is sandy or sandy-skeletal
- Soil well-drained or drier
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is sandy or sandy-skeletal
- Soil moderately well-drained or somewhat poorly-drained
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- All soil components greater than 20 inches deep (50 cm)
- Predominant soil texture is sandy or sandy-skeletal
- Soil moderately well-drained or somewhat poorly-drained
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (50-100 cm) deep, over bedrock
- Mineral soils, or a combination of organic and mineral soils together
- All soils less than 20 inches (50 cm) deep over bedrock
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (100 cm) deep, over bedrock
- Mineral soils, or a combination of organic and mineral soils together
- All soils less than 20 inches (50 cm) deep over bedrock
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (50-100 cm) deep, over bedrock
- Mineral soils, or a combination of organic and mineral soils together
- Soils vary from 10-40 inches (25-100 cm) in depth over bedrock
- Soils lacking very dark colors associated with high organic matter content
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (100 cm) deep, over bedrock
- Mineral soils, or a combination of organic and mineral soils together
- Soils vary from 10-40 inches (25-100 cm) in depth over bedrock
- Soils lacking very dark colors associated with high organic matter content
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (50-100 cm) deep, over bedrock
- Mineral soils, or a combination of organic and mineral soils together
- Soils vary from 10-40 inches (25-100 cm) in depth over bedrock
- Soils with very high organic matter content, very dark brown and/or maroon in color below the E horizon
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (100 cm) deep, over bedrock
- Mineral soils, or a combination of organic and mineral soils together
- Soils vary from 10-40 inches (25-100 cm) in depth over bedrock
- Soils with very high organic matter content, very dark brown and/or maroon in color below the E horizon
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (50-100 cm) deep, over bedrock
- Shallow organic soils with pH less than 4.5 and large areas of open canopy with exposed bedrock
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
- Site capable of producing greater than 20% persistent tree cover
- Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (100 cm) deep, over bedrock
- Shallow organic soils with pH less than 4.5 and large areas of open canopy with exposed bedrock
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site occurs in alpine/subalpine zone (cryic soil temp regime)
- Site at or below tree line, supports tree growth
- Tree growth stunted (typically less than a few feet tall [~1 meter]) due to high elevations and landscape position exposed to wind scour
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site occurs in alpine/subalpine zone (cryic soil temp regime)
- Site at or below tree line, supports tree growth
- Tree growth stunted (typically less than a few feet tall [~1 meter]) due to high elevations and landscape position exposed to wind scour
-
i
Key Characteristics
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site occurs in alpine/subalpine zone (cryic soil temp regime)
- Site at or below tree line, supports tree growth
- Site supports growth of trees greater than a few feet (~1 meters) tall
- Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
- Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
- Site occurs in alpine/subalpine zone (cryic soil temp regime)
- Site at or below tree line, supports tree growth
- Site supports growth of trees greater than a few feet (~1 meters) tall
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Ecological site keys
MLRA 143 ES Key
1a.
Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures
2a.
Broad floodplain of large river system. Includes channel banks, stream terraces, and/or natural levies and associated oxbow ponds and marshes
... F143XY110ME – Broad Floodplain Riparian Complex
2b.
Floodplain of small river system. Includes channel banks, stream terraces, and sometimes small marshes and oxbow ponds if flooded regularly
... F143XY120ME – Small Floodplain Riparian Complex
1b.
Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
3a.
Soils poorly- and/or very poorly-drained throughout site
4a.
Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
5b.
Soils mostly peat or mucky peat
6a.
Soil pH mostly greater than 4.5 throughout wetland
... F143XY220ME – Semi-Acidic Peat Wetland Complex
6b.
Soil pH less than 4.5 in most of the wetland complex
... F143XY230ME – Acidic Peat Wetland Complex
4b.
Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
7a.
All soils on the site are very poorly-drained with greater than 40 inches (100 cm) of organic mucky peat deposits on the surface
... F143XY302ME – Mucky Swamp
7b.
Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
8a.
All soils on the site are poorly-drained with very little or no very poorly-drained inclusions (soil textures may vary from fine to coarse)
... F143XY304ME – Wet Flat
8b.
Soils form a complex of poorly-drained soils on mounds and very poorly-drained soils in depressions
9a.
Soil textures loamy or fine loamy with a densely compacted horizon within 40 inches (100 cm) of the soil surface
... F143XY301ME – Loamy Till Swamp (Northern White Cedar)
9b.
Soil textures typically sandy or coarse-loamy without a densely compacted horizon within 40 inches (100 cm) of soil surface
... F143XY303ME – Acidic Swamp
3b.
Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
10a.
Site occurs in alpine/subalpine zone (cryic soil temp regime)
11a.
Site above tree line and exposed to too much wind scour to support growth of more than a few scattered, very short trees (~1 meter)
... F143XY901ME – Alpine Ridge Meadow
11b.
Site at or below tree line, supports tree growth
12a.
Tree growth stunted (typically less than a few feet tall [~1 meter]) due to high elevations and landscape position exposed to wind scour
... F143XY902ME – Alpine Ridge Krummholz
12b.
Site supports growth of trees greater than a few feet (~1 meters) tall
... F143XY903ME – Subalpine Slope
10b.
Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
13a.
Site occurs in exposed areas high in rock outcrop with little soil available for plants, too harsh to support greater than 20% tree cover
... F143XY801ME – Rockland
13b.
Site capable of producing greater than 20% persistent tree cover
14a.
Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (50-100 cm) deep, over bedrock
15a.
Shallow organic soils with pH less than 4.5 and large areas of open canopy with exposed bedrock
... F143XY704ME – Shallow Organic Rock Pocket
15b.
Mineral soils, or a combination of organic and mineral soils together
16b.
Soils vary from 10-40 inches (25-100 cm) in depth over bedrock
17a.
Soils with very high organic matter content, very dark brown and/or maroon in color below the E horizon
... F143XY703ME – Shallow And Moderately Deep Humic Till
17b.
Soils lacking very dark colors associated with high organic matter content
... F143XY702ME – Shallow And Moderately Deep Till
14b.
All soil components greater than 20 inches deep (50 cm)
18a.
Predominant soil texture is sandy or sandy-skeletal
18b.
Predominant soil texture is finer than sandy
20b.
Predominant soil texture is coarser than fine-silty
21a.
Loamy surface soils underlain by sandy or sandy-skeletal strata
... F143XY505ME – Loamy Over Sandy
21b.
Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
22a.
Soils poorly drained mapped with somewhat-poorly drained components
23a.
Site occurs on the toeslope of a large watershed with moderate to steep slopes above, where nutrients and water accumulate
... F143XY502ME – Loamy Till Toeslope
23b.
Site occurs on relatively flat expanses with less than 5% slope, rather than the toeslope of a large watershed
... F143XY503ME – Loamy Flat
22b.
Soils moderately well- to well-drained, often with somewhat poorly-drained components
24a.
Site occurs in protected coves and drainageways with very thick, dark surface A horizon greater than 12 inches (30 cm), very high in organic matter
... F143XY504ME – Enriched Loamy Cove
24b.
Site occurs on gentle to steep slopes (greater than 5%), typically spodosols or inceptisols lacking significant organic matter accumulation
... F143XY501ME – Loamy Slope
Key with outline style headers
I.
Site occurs along major rivers and streams and experiences regular flooding, or would in the absence of dams and other water control structures
A.
Broad floodplain of large river system. Includes channel banks, stream terraces, and/or natural levies and associated oxbow ponds and marshes
... F143XY110ME – Broad Floodplain Riparian Complex
B.
Floodplain of small river system. Includes channel banks, stream terraces, and sometimes small marshes and oxbow ponds if flooded regularly
... F143XY120ME – Small Floodplain Riparian Complex
II.
Site does not occur along major rivers and streams, or if it does occur near major rivers and streams it is not influenced by regular flooding events (even in the absence of dams)
A.
Soils poorly- and/or very poorly-drained throughout site
1
Wetland area consisting of multiple associated plant communities, most of which are too wet to support greater than 20% tree cover
ii.
Soils mostly peat or mucky peat
a.
Soil pH mostly greater than 4.5 throughout wetland
... F143XY220ME – Semi-Acidic Peat Wetland Complex
b.
Soil pH less than 4.5 in most of the wetland complex
... F143XY230ME – Acidic Peat Wetland Complex
2
Wetland area consisting of multiple associated plant communities, most of which support greater than 20% tree cover
i.
All soils on the site are very poorly-drained with greater than 40 inches (100 cm) of organic mucky peat deposits on the surface
... F143XY302ME – Mucky Swamp
ii.
Most soils on the site have less than 40 inches (100 cm) organic deposits on surface
a.
All soils on the site are poorly-drained with very little or no very poorly-drained inclusions (soil textures may vary from fine to coarse)
... F143XY304ME – Wet Flat
b.
Soils form a complex of poorly-drained soils on mounds and very poorly-drained soils in depressions
1)
Soil textures loamy or fine loamy with a densely compacted horizon within 40 inches (100 cm) of the soil surface
... F143XY301ME – Loamy Till Swamp (Northern White Cedar)
2)
Soil textures typically sandy or coarse-loamy without a densely compacted horizon within 40 inches (100 cm) of soil surface
... F143XY303ME – Acidic Swamp
B.
Soils somewhat poorly-drained or drier, or, a combination of poorly-drained soils and drier soils in a complex throughout site
1
Site occurs in alpine/subalpine zone (cryic soil temp regime)
i.
Site above tree line and exposed to too much wind scour to support growth of more than a few scattered, very short trees (~1 meter)
... F143XY901ME – Alpine Ridge Meadow
ii.
Site at or below tree line, supports tree growth
a.
Tree growth stunted (typically less than a few feet tall [~1 meter]) due to high elevations and landscape position exposed to wind scour
... F143XY902ME – Alpine Ridge Krummholz
b.
Site supports growth of trees greater than a few feet (~1 meters) tall
... F143XY903ME – Subalpine Slope
2
Site does not occur in alpine/subalpine zone and has a frigid soil temperature regime
i.
Site occurs in exposed areas high in rock outcrop with little soil available for plants, too harsh to support greater than 20% tree cover
... F143XY801ME – Rockland
ii.
Site capable of producing greater than 20% persistent tree cover
a.
Shallow soils less than 20 inches (50 cm) deep, or a combination of shallow and moderately deep soils 20-40 inches (100 cm) deep, over bedrock
1)
Shallow organic soils with pH less than 4.5 and large areas of open canopy with exposed bedrock
... F143XY704ME – Shallow Organic Rock Pocket
2)
Mineral soils, or a combination of organic and mineral soils together
b)
Soils vary from 10-40 inches (25-100 cm) in depth over bedrock
(1)
Soils with very high organic matter content, very dark brown and/or maroon in color below the E horizon
... F143XY703ME – Shallow And Moderately Deep Humic Till
(2)
Soils lacking very dark colors associated with high organic matter content
... F143XY702ME – Shallow And Moderately Deep Till
b.
All soil components greater than 20 inches deep (50 cm)
1)
Predominant soil texture is sandy or sandy-skeletal
2)
Predominant soil texture is finer than sandy
a)
Predominant soil texture is fine or fine-silty
b)
Predominant soil texture is coarser than fine-silty
(1)
Loamy surface soils underlain by sandy or sandy-skeletal strata
... F143XY505ME – Loamy Over Sandy
(2)
Loamy surface soils underlain by soils finer than sandy or sandy-skeletal
(a)
Soils poorly drained mapped with somewhat-poorly drained components
(1)
Site occurs on the toeslope of a large watershed with moderate to steep slopes above, where nutrients and water accumulate
... F143XY502ME – Loamy Till Toeslope
(2)
Site occurs on relatively flat expanses with less than 5% slope, rather than the toeslope of a large watershed
... F143XY503ME – Loamy Flat
(b)
Soils moderately well- to well-drained, often with somewhat poorly-drained components
(1)
Site occurs in protected coves and drainageways with very thick, dark surface A horizon greater than 12 inches (30 cm), very high in organic matter
... F143XY504ME – Enriched Loamy Cove
(2)
Site occurs on gentle to steep slopes (greater than 5%), typically spodosols or inceptisols lacking significant organic matter accumulation
... F143XY501ME – Loamy Slope
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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.
