Calvert County, Maryland
DwE—Downer-Woodstown complex, 15 to 25 percent slopes
Map Unit Setting
Elevation: 0 to 200 feet
Mean annual precipitation: 40 to 50 inches
Mean annual air temperature: 52 to 57 degrees F
Frost-free period: 180 to 210 days
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Map Unit Composition
Downer, .-, and similar soils: 65 percent
Woodstown and similar soils: 25 percent
Minor components: 10 percent
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Description of Downer, .Setting
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Landform: Low hills, knolls
Landform position (three-dimensional): Side slope
Down-slope shape: Linear, convex
Across-slope shape: Linear
Parent material: Loamy fluviomarine deposits and/or gravelly
fluviomarine deposits
Properties and qualities
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Slope: 15 to 25 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water
(Ksat):Moderately high to high (0.60 to 6.00 in/hr)
Depth to water table: About 40 to 72 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 6.6 inches)
Interpretive groups
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Land capability (nonirrigated): 4e
Typical profile
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0 to 3 inches: Loamy sand
3 to 16 inches: Loamy sand
16 to 36 inches: Sandy loam
36 to 48 inches: Loamy sand
48 to 80 inches: Stratified sand to sandy loam
Description of Woodstown
Setting
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Landform: Depressions, broad interstream divides, pediments,
fluviomarine terraces, stream terraces, swales
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Landform position (three-dimensional): Tread
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Down-slope shape: Concave, linear
Across-slope shape: Concave, linear
Parent material: Loamy fluviomarine deposits
Properties and qualities
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Slope: 15 to 25 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Moderately well drained
Capacity of the most limiting layer to transmit water
(Ksat):Moderately high to high (0.20 to 2.00 in/hr)
Depth to water table: About 20 to 40 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 8.9 inches)
Interpretive groups
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Land capability (nonirrigated): 6e
Typical profile
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0 to 8 inches: Sandy loam
8 to 28 inches: Loam
28 to 42 inches: Fine sandy loam
42 to 60 inches: Sandy loam
60 to 72 inches: Loamy sand
Minor Components
Issue
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Percent of map unit: 5 percent
Landform: Flood plains, drainageways, drainhead complexes
Down-slope shape: Linear
Across-slope shape: Linear
Galestown
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Percent of map unit: 5 percent
Landform: Interfluves, fluviomarine terraces, knolls
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Riser
Down-slope shape: Convex
Across-slope shape: Linear
Description — Map Unit Description