Major Land Resource Area 153A
Atlantic Coast Flatwoods
Accessed: 03/27/2025
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Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Upland flats and landforms with local topographic relief: knolls, ridges, crests, interstream divides, shoulders, slopes, depressions, and Bay rims
- Order: Predominantly psamments (sands)
- : Dry sands, excessively drained to well drained, typic quartzipsamments.
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i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Upland flats and landforms with local topographic relief: knolls, ridges, crests, interstream divides, shoulders, slopes, depressions, and Bay rims
- Order: Predominantly psamments (sands)
- : Moist sands on moderately well drained to somewhat poorly drained soils.
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i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Upland flats and landforms with local topographic relief: knolls, ridges, crests, interstream divides, shoulders, slopes, depressions, and Bay rims
- Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
- : Dry, somewhat excessively drained to well drained.
- : Soil Texture Particle Size loamy. Includes fine-silty, fine-loamy, loamy, and coarse-loamy taxonomic textural families.
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i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Upland flats and landforms with local topographic relief: knolls, ridges, crests, interstream divides, shoulders, slopes, depressions, and Bay rims
- Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
- : Dry, somewhat excessively drained to well drained.
- : Soil Texture Particle Size clay. Includes the fine taxonomic textural family
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i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
- : Moist, moderately well drained to somewhat poorly drained.
- : Soil Texture Particle Size loamy. Includes fine-silty, fine-loamy, loamy, and coarse-loamy taxonomic textural families.
- : PES Corresponds to R153AY001GA but mostly at a latitude North of the Santee River.
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i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
- : Moist, moderately well drained to somewhat poorly drained.
- : Soil Texture Particle Size clay. Includes the fine taxonomic textural family
-
i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Spodosols
- : Moist, somewhat poorly drained.
-
i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
- : Wet, poorly drained and very poorly drained. Some ponding.
- : Soil Texture Particle Size loamy. Includes fine-silty, fine-loamy, loamy, and coarse-loamy taxonomic textural families.
-
i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
- : Wet, poorly drained and very poorly drained. Some ponding.
- : Soil Texture Particle Size clay. Includes the fine taxonomic textural family
-
i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Spodosols
- : Wet, poorly drained and very poorly drained. Some ponding.
-
i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Histosols
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i
Key Characteristics
- : Riparian Zone - Positioned on a riparian landscape, including fluvial terraces and flood plains, connected directly to surface water and flooding.
- Order: Flooded, mineral soils include alfisols, entisols, inceptisols, and mollisols
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i
Key Characteristics
- : Riparian Zone - Positioned on a riparian landscape, including fluvial terraces and flood plains, connected directly to surface water and flooding.
- Order: Flooded Histosols
-
i
Key Characteristics
- : Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
- : Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
- Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
- : Moist, moderately well drained to somewhat poorly drained.
- : Soil Texture Particle Size loamy. Includes fine-silty, fine-loamy, loamy, and coarse-loamy taxonomic textural families.
- : South of the Santee River
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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 153A, Atlantic Coast Flatwoods
Landscape
: Marine Terrace Uplands - Positioned on a marine terrace or associated landforms. These sites include upper fluvio-marine terraces that are above the current dominant flooding regime.
Landform
: Upland flats and landforms with local topographic relief: knolls, ridges, crests, interstream divides, shoulders, slopes, depressions, and Bay rims
Soil
Order: Predominantly psamments (sands)
Drainage
: Dry sands, excessively drained to well drained, typic quartzipsamments.
... F153AY010NC – Dry Sands
Drainage
: Moist sands on moderately well drained to somewhat poorly drained soils.
... F153AY020NC – Moist Sands
Soil
Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
Drainage
: Dry, somewhat excessively drained to well drained.
Texture
: Soil Texture Particle Size loamy. Includes fine-silty, fine-loamy, loamy, and coarse-loamy taxonomic textural families.
... F153AY030NC – Dry Loamy Rises and Flats
Texture
: Soil Texture Particle Size clay. Includes the fine taxonomic textural family
... F153AY035NC – Dry Clay Rises and Flats
Landform
: Flats and Depressions: Areas characterized by a continuous surface that is smooth, even, or horizontal, or nearly so, including isolated depressions within the flat landscape matrix
Soil
Order: Predominantly Ultisols, but includes some alfisols, inceptisols, and mollisols.
Drainage
: Moist, moderately well drained to somewhat poorly drained.
Texture
: Soil Texture Particle Size loamy. Includes fine-silty, fine-loamy, loamy, and coarse-loamy taxonomic textural families.
Latitude
: PES Corresponds to R153AY001GA but mostly at a latitude North of the Santee River.
... F153AY040NC – Moist Loamy Rises and Flats
Texture
: Soil Texture Particle Size clay. Includes the fine taxonomic textural family
... F153AY045NC – Moist Clay Rises and Flats
Drainage
: Wet, poorly drained and very poorly drained. Some ponding.
Texture
: Soil Texture Particle Size loamy. Includes fine-silty, fine-loamy, loamy, and coarse-loamy taxonomic textural families.
... F153AY060NC – Wet Loamy Flats and Depressions
Texture
: Soil Texture Particle Size clay. Includes the fine taxonomic textural family
... F153AY065NC – Wet Clay Flats and Depressions
Soil
Order: Spodosols
Drainage
: Wet, poorly drained and very poorly drained. Some ponding.
... F153AY070NC – Wet Spodosol Flats and Depressions
Landscape
: Riparian Zone - Positioned on a riparian landscape, including fluvial terraces and flood plains, connected directly to surface water and flooding.
Soil
Order: Flooded, mineral soils include alfisols, entisols, inceptisols, and mollisols
... F153AY090NC – Flooded Mineral Soil Flood Plains and Terraces
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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.
