Major Land Resource Area 067B
Central High Plains, Southern Part
Accessed: 12/21/2024
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Surface and subsoil textures other than sandy
- No visible salts present in the soil profile or on the soil surface
- <6% slope
- Other surface texture
- No calcium carbonates at the surface
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Surface and subsoil textures other than sandy
- No visible salts present in the soil profile or on the soil surface
- >6% slope
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Surface and subsoil textures other than sandy
- No visible salts present in the soil profile or on the soil surface
- <6% slope
- Other surface texture
- Calcium carbonates at the surface
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i
Key Characteristics
- Additional run-on moisture
- No redoximorphic features and/or water table within 4 feet of the soil surface
- Not subject to flooding
- Closed depression or playa that may pond water
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Sandy surface and subsoil textures (sand, loamy sand, sandy loam)
- No rough, steep, dune-type appearance
- >5% slope with undulating/rolling topography
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Sandy surface and subsoil textures (sand, loamy sand, sandy loam)
- Rough, steep, dune-type appearance (cat-steps or terracettes are typically apparent)
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Sandy surface and subsoil textures (sand, loamy sand, sandy loam)
- No rough, steep, dune-type appearance
- <5% slope with nearly level topography
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i
Key Characteristics
- Additional run-on moisture
- Redoximorphic features and/or a water table within 4 feet of the soil surface
- No visible salts present in the soil profile or on the soil surface
- Subsoil textures of coarse sand, fine sand, loamy coarse sand, loamy sand, and/or loamy fine sand
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i
Key Characteristics
- Additional run-on moisture
- No redoximorphic features and/or water table within 4 feet of the soil surface
- Subject to flooding (rare, occasional, frequent, or very frequent)
- Subsoil textures of coarse sand, sand, loamy coarse sand, loamy sand, or loamy fine sand
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i
Key Characteristics
- Additional run-on moisture
- No redoximorphic features and/or water table within 4 feet of the soil surface
- Not subject to flooding
- 'Slickspots' or bare areas of high sodium and surface textures of loam, clay loam, or clay
-
i
Key Characteristics
- Additional run-on moisture
- Redoximorphic features and/or a water table within 4 feet of the soil surface
- Visible salts present in the soil profile or on the soil surface
-
i
Key Characteristics
- Additional run-on moisture
- No redoximorphic features and/or water table within 4 feet of the soil surface
- Subject to flooding (rare, occasional, frequent, or very frequent)
- Subsoil textures other than sandy
- No visible salts present in the soil profile or on the soil surface
-
i
Key Characteristics
- Additional run-on moisture
- No redoximorphic features and/or water table within 4 feet of the soil surface
- Subject to flooding (rare, occasional, frequent, or very frequent)
- Subsoil textures other than sandy
- Visible salts present in the soil profile or on the soil surface
-
i
Key Characteristics
- Additional run-on moisture
- Redoximorphic features and/or a water table within 4 feet of the soil surface
- No visible salts present in the soil profile or on the soil surface
- Subsoil textures other than sandy
-
i
Key Characteristics
- No additional run-on moisture
- Bedrock within 40 inches of the soil surface
- Siltstone bedrock
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Surface and subsoil textures other than sandy
- No visible salts present in the soil profile or on the soil surface
- <6% slope
- Surface texture of clay loam, clay, or silty clay
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i
Key Characteristics
- No additional run-on moisture
- Bedrock within 40 inches of the soil surface
- Shale bedrock
- >6% slope
-
i
Key Characteristics
- No additional run-on moisture
- Bedrock within 40 inches of the soil surface
- Shale bedrock
- <6% slope
-
i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- <15% rock fragments on the surface and/or in the subsoil
- Surface and subsoil textures other than sandy
- Visible salts present in the soil profile or on the soil surface
-
i
Key Characteristics
- No additional run-on moisture
- Bedrock within 40 inches of the soil surface
- Sandstone bedrock
-
i
Key Characteristics
- No additional run-on moisture
- Bedrock within 40 inches of the soil surface
- Limestone bedrock
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i
Key Characteristics
- No additional run-on moisture
- Bedrock deeper than 40 inches from the soil surface
- >15% rock fragments on the surface and/or in the subsoil
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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 67B Key
I.
Additional run-on moisture
A.
Redoximorphic features and/or a water table within 4 feet of the soil surface
2
No visible salts present in the soil profile or on the soil surface
i.
Subsoil textures of coarse sand, fine sand, loamy coarse sand, loamy sand, and/or loamy fine sand
... R067BY029CO – Sandy Meadow
B.
No redoximorphic features and/or water table within 4 feet of the soil surface
1
Subject to flooding (rare, occasional, frequent, or very frequent)
i.
Subsoil textures of coarse sand, sand, loamy coarse sand, loamy sand, or loamy fine sand
... R067BY031CO – Sandy Bottomland
ii.
Subsoil textures other than sandy
a.
Visible salts present in the soil profile or on the soil surface
... R067BY037CO – Saline Overflow
2
Not subject to flooding
ii.
'Slickspots' or bare areas of high sodium and surface textures of loam, clay loam, or clay
... R067BY033CO – Salt Flat
II.
No additional run-on moisture
A.
Bedrock within 40 inches of the soil surface
1
Shale bedrock
B.
Bedrock deeper than 40 inches from the soil surface
2
<15% rock fragments on the surface and/or in the subsoil
i.
Sandy surface and subsoil textures (sand, loamy sand, sandy loam)
a.
Rough, steep, dune-type appearance (cat-steps or terracettes are typically apparent)
... R067BY022CO – Choppy Sands
b.
No rough, steep, dune-type appearance
ii.
Surface and subsoil textures other than sandy
a.
Visible salts present in the soil profile or on the soil surface
... R067BY047CO – Alkaline Plains
b.
No visible salts present in the soil profile or on the soil surface
2)
<6% slope
b)
Other surface texture
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Visible Salts. Crystals of salt (usually white, like table salt) or masses of crystals of salt visible with the naked eye.
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Cat-steps/Terracettes. Small, irregular step-like forms on steep hillslopes, especially in pasture, formed by creep or erosion of surficial materials that may be induced or enhanced by trampling of livestock such as sheep or cattle.
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Flooding Frequency Classes. *None, No reasonable possibility of flooding; near 0 percent chance of flooding in any year or less than 1 time in 500 years. *Very Rare, Flooding is very unlikely but possible under extremely unusual weather conditions; less than 1 percent chance of flooding in any year or less than 1 time in 100 years but more than 1 time in 500 years. *Rare, Flooding is unlikely but possible under unusual weather conditions; 1 to 5 percent chance of flooding in any year or nearly 1 to 5 times in 100 years.
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Flooding Frequency Classes. *Occasional, Flooding is expected infrequently under usual weather conditions; 5 to 50 percent chance of flooding in any year or 5 to 50 times in 100 years. *Frequent, Flooding is likely to occur often under usual weather conditions; more than a 50 percent chance of flooding in any year or more than 50 times in 100 years, but less than a 50 percent chance of flooding in all months in any year. *Very Frequent, Flooding is likely to occur very often under usual weather conditions; more than a 50 percent chance of flooding in all months of any year.
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Ponding Frequency Classes. *None, No reasonable possibility of ponding; near 0 percent chance of ponding in any year. *Rare, Ponding unlikely but possible under unusual weather conditions; from nearly 0 to 5 percent chance of ponding in any year or nearly 0 to 5 times in 100 years. *Occasional, Ponding is expected infrequently under usual weather conditions; 5 to 50 percent chance of ponding in any year or nearly 5 to 50 times in 100 years. *Frequent, Ponding is likely to occur often under usual weather conditions; more than a 50 percent chance of ponding in any year or more than 50 times in 100 years.
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Redoximorphic Features. Features formed by the processes of reduction, translocation, and/or oxidation of Iron (Fe) and Manganese (Mn) oxides; formerly called mottles or low-chroma colors. (Ex. Rust colored features or light-gray colored features on soil peds/faces).
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Slickspots. Areas having a puddled or crusted (or salt crusted), very smooth, nearly impervious surface. The underlying material is dense and massive or columnar. The material ranges from extremely acid to very strongly alkaline and from sand to clay.
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Ecological sites
Major Land Resource Areas
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.
