Soil texture files in US continental scale are derived from PSU STATSGO Soil data * in ascii format.
STATSGO dominant soil texture is classed into 11 standard soil layers * for the 48 conterminous states derived from the State Soil Geographic (STATSGO) * soils data compiled by the Natural Resources Conservation Service (NRCS) of the U.S. Department of Agriculture.

For more information on STATSGO data, please visit PSU STATSGO Soil Website *
 

· Layer 1
· Layer 2
· Layer 3
· Layer 4
· Layer 5
· Layer 6
· Layer 7
· Layer 8
· Layer 9
· Layer 10
· Layer 11

2. Soil Texture in Study Basin Scale

Soil texture data in study basin scale are in geographic (latitude/longitude) coordinats, and provided in ASCII format. These data are substraction from 30 arc second dataset generated by Dough Miller ( http://dbwww.essc.psu.edu/)*. This dataset contains the dominant soil texture class for each of 11 standard soil layers derived from State Soil Geographic (STASGO) soil data compiled by the Natural Resources Conservation Service (NRCS) of the U.S. Department of Agriculture.

The 11 standard layer are: 0-5cm, 5-10cm, 10-20cm, 20-30cm, 30-40cm, 40-60cm, 60-80cm, 80-100cm, 100-150cm, 150-200cm, 200-250cm. For many STASGO components, a depth-to-bedrock value of 152cm was used to indicate that the soil was sampled only to this depth, and no bedrock was encountered. As a result, for many mapunits a soil texture of 'bedrock' for the two lowest standard layers (150cm to 250cm) may actually indicate 'no data'. Definition of soil texture classes:

 
 0 - No data
 1 - Sand
 2 - Loamy sand
 3 - Sandy loam
 4 - Silt loam
 5 - Silt
 6 - Loam
 7 - Sandy clay loam
 8 - Silty clay loam
 9 - Clay loam
10 - Sandy clay
11 - Silty clay
12 - Clay
13 - Organic materials
14 - Water
15 - Bedrock
16 - Other

For Cheat River Basin
· Cheat_005
· Cheat_010
· Cheat_020
· Cheat_030
· Cheat_040
· Cheat_060
· Cheat_080
· Cheat_100
· Cheat_150
· Cheat_200
· Cheat_250

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