Su—Sullivan

Su—Sullivan silt loam, occasionally flooded

Map Unit Setting

  • National map unit symbol: kpww

  • Elevation: 800 to 1,300 feet

  • Mean annual precipitation: 47 to 55 inches

  • Mean annual air temperature: 57 to 61 degrees F

  • Frost-free period: 180 to 205 days

  • Farmland classification: All areas are prime farmland

Map Unit Composition

  • Sullivan and similar soils: 85 percent

  • Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Sullivan

Setting
  • Landform: Flood plains

  • Landform position (three-dimensional): Tread

  • Parent material: Loamy alluvium derived from interbedded sedimentary rock

Typical profile
  • H1 - 0 to 56 inches: silt loam

  • H2 - 56 to 60 inches: gravelly sandy loam

Properties and qualities
  • Slope: 0 to 2 percent

  • Depth to restrictive feature: More than 80 inches

  • Natural drainage class: Well drained

  • Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in/hr)

  • Depth to water table: About 48 to 72 inches

  • Frequency of flooding: Occasional

  • Frequency of ponding: None

  • Available water storage in profile: High (about 9.4 inches)

Interpretive groups
  • Land capability classification (irrigated): None specified

  • Land capability classification (nonirrigated): 2w

  • Hydrologic Soil Group: B

  • Hydric soil rating: No

 


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