Ag Zone 2

FORECAST DETAILS

FROM THE USDA

Map Unit Setting

  • National map unit symbol: 2rzvy
  • Elevation: 120 to 1,020 feet
  • Mean annual precipitation: 53 to 75 inches
  • Mean annual air temperature: 61 to 64 degrees F
  • Frost-free period: 250 to 335 days
  • Farmland classification: Not prime farmland

Map Unit Composition

  • Smithdale and similar soils: 85 percent
  • Minor components: 15 percent
  • Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Smithdale

Setting
  • Landform: Hillslopes
  • Landform position (two-dimensional): Backslope
  • Landform position (three-dimensional): Side slope
  • Down-slope shape: Linear
  • Across-slope shape: Linear
  • Parent material: Loamy fluviomarine deposits derived from sedimentary rock
Typical profile
  • A – 0 to 3 inches: fine sandy loam
  • BE – 3 to 16 inches: fine sandy loam
  • Bt1 – 16 to 42 inches: sandy clay loam
  • Bt2 – 42 to 57 inches: sandy loam
  • BC – 57 to 71 inches: sandy loam
  • C – 71 to 80 inches: loamy sand
Properties and qualities
  • Slope: 15 to 35 percent
  • Depth to restrictive feature: More than 80 inches
  • Drainage class: Well drained
  • Runoff class: High
  • 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: More than 80 inches
  • Frequency of flooding: None
  • Frequency of ponding: None
  • Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
  • Available water supply, 0 to 60 inches: High (about 9.2 inches)
Interpretive groups
  • Land capability classification (irrigated): 7e
  • Land capability classification (nonirrigated): 7e
  • Hydrologic Soil Group: B
  • Hydric soil rating: No

Minor Components

Sweatman
  • Percent of map unit: 5 percent
  • Landform: Hillslopes
  • Landform position (two-dimensional): Backslope
  • Landform position (three-dimensional): Side slope
  • Down-slope shape: Linear
  • Across-slope shape: Convex, linear
  • Hydric soil rating: No
Heidel
  • Percent of map unit: 5 percent
  • Landform: Hillslopes
  • Landform position (two-dimensional): Backslope, shoulder
  • Landform position (three-dimensional): Side slope
  • Down-slope shape: Linear
  • Across-slope shape: Convex, linear
  • Hydric soil rating: No
Bibb
  • Percent of map unit: 5 percent
  • Landform: Flood plains
  • Landform position (three-dimensional): Tread, dip
  • Down-slope shape: Linear
  • Across-slope shape: Linear, concave
  • Hydric soil rating: Yes