Major Land Resource Area 055D
Glacial Lake Dakota
Accessed: 12/21/2024
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Key Characteristics
- Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
- Site is located on deep depressions, is usually ponded into mid-summer, has high organic matter content and is very poorly drained
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Key Characteristics
- Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
- Site is located on a floodplain and indications of saturation within 2 feet of the soil surface and the site is dominated by hydrophytes
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Key Characteristics
- Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
- Soil has redoximorphic features visible 24-42 inches from the soil surface and is somewhat poorly drained
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Key Characteristics
- Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
- Site is typically located in depressions, early growing season ponding, and is poorly drained
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i
Key Characteristics
- Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
- Site has strong effervescence within 16 inches of soil surface
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i
Key Characteristics
- Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
- Site on lowland with EC>8 and/or visible salts and/or salt tolerant vegetation present. Soil has strong effervescence within 16 inches of the soil surface
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Key Characteristics
- Site is located on uplands and has a sand content of >45% in the soil surface
- Loamy fine sand to find san
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Key Characteristics
- Site is located on uplands and has a sand content of >45% in the soil surface
- Fine sandy loam and sandy loam soil surface textures
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Key Characteristics
- All other sites
- All other sites
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i
Key Characteristics
- Site located in the uplands has a clay content >35% in the soil surface
- Silty clay to clay soil surface texture and no root restrictive layer
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Key Characteristics
- All other sites
- Site located on shoulder slopes, convex rises, and summits. Strong to violent effervescence immediately below the surface layer
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Key Characteristics
- Site located in the uplands has a clay content >35% in the soil surface
- Soil has dense, root-restrictive, claypan layer at 6-14” from the surface and a clay loam to clay soil surface texture
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Key Characteristics
- Site is located on uplands and has root-restrictive layer within 20 inches from soil surface
- Soil depth is 9-20 inches to bedrock
- Soil substratum contains up to 10-60% gravel and/or 25-75% sand
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Key Characteristics
- Site located in the uplands has a clay content >35% in the soil surface
- Soil has a dense, root-restrictive, claypan layer <6” from the surface
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i
Key Characteristics
- Site is located on uplands and has root-restrictive layer within 20 inches from soil surface
- Soil with >15% coarse sand or gravel at depths <14 inches
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i
Key Characteristics
- All other sites
- Site is in a floodplain or swale and fine sand loam or loam soil surface texture
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i
Key Characteristics
- Site is located on uplands and has a sand content of >45% in the soil surface
- Site is located on dunes with >15% slope
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Key Characteristics
- Site is located on uplands and has a sand content of >45% in the soil surface
- Site has a sodic, dense claypan layer within 6-18” of surface and fine sandy loam or silt loam soil surface texture
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Key Characteristics
- Site is located on uplands and has root-restrictive layer within 20 inches from soil surface
- Soil depth is 9-20 inches to bedrock
- Soil depth is 10-20” to soft, weathered shale beds
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i
Key Characteristics
- Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
- Soil surface texture is fine sandy loam to loamy sand
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Zoom in to display soil survey map units for an area of interest, and zoom out to display MLRAs. Select a map unit polygon to view ecological sites correlated to that map unit. View a brief description of an ecological site by clicking on its name in the map popup. Soil survey correlations may not be accurate, and ecological site classification of a location should always be verified in the field. Each selection may require the transfer of several hundred KB of data.
Ecological site keys
MLRA 55D
A
Sites have indicators of saturation within a depth of 42 inches during the growing season. (mucky surface, observed water table, redoximorphic depletions, redoximorphic concentrations)
I
Site is located on a floodplain and indications of saturation within 2 feet of the soil surface and the site is dominated by hydrophytes
... R055DY002SD – Linear Meadow
II
Site on lowland with EC>8 and/or visible salts and/or salt tolerant vegetation present. Soil has strong effervescence within 16 inches of the soil surface
... R055DY007SD – Saline Lowland
III
Site has strong effervescence within 16 inches of soil surface
... R055DY006SD – Limy Subirrigated
IV
Site is typically located in depressions, early growing season ponding, and is poorly drained
... R055DY004SD – Wet Meadow
V
Soil has redoximorphic features visible 24-42 inches from the soil surface and is somewhat poorly drained
... R055DY003SD – Subirrigated
VI
Site is located on deep depressions, is usually ponded into mid-summer, has high organic matter content and is very poorly drained
... R055DY001SD – Shallow Marsh
B
Site is located on uplands and has root-restrictive layer within 20 inches from soil surface
II
Soil depth is 9-20 inches to bedrock
C
Site is located on uplands and has a sand content of >45% in the soil surface
II
Site has a sodic, dense claypan layer within 6-18” of surface and fine sandy loam or silt loam soil surface texture
... R055DY042SD – Sandy Claypan
D.
Site located in the uplands has a clay content >35% in the soil surface
II.
Soil has a dense, root-restrictive, claypan layer <6” from the surface
... R055DY015SD – Thin Claypan
III.
Soil has dense, root-restrictive, claypan layer at 6-14” from the surface and a clay loam to clay soil surface texture
... R055DY013SD – Claypan
E.
All other sites
I.
Site is in a floodplain or swale and fine sand loam or loam soil surface texture
... R055DY020SD – Loamy Overflow
II.
Site located on shoulder slopes, convex rises, and summits. Strong to violent effervescence immediately below the surface layer
... R055DY012SD – Thin Upland
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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.
