WMS:Soil Type Runoff Coefficient Files: Difference between revisions
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Revision as of 16:55, 17 February 2014
Like land use, soil type coverages/grids can be used to map model parameters. Tables with corresponding runoff coefficients, Green & Ampt parameters, or CASC2D values for different can be mapped. The CASC2D tables are the same as defined in the land use section. Runoff coefficient table definitions and examples are given in Figure 1 and Figure 2.
ID1, "Soil type description 1", RC1 |
ID2, "Soil type description 2", RC2 |
ID3, "Soil type description 3", RC3 |
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IDn, "Soil type description n", RCn |
Figure 1. Soil Type Runoff Coefficient File Format.
1, "Highly impervious", 1.0 |
2, "Slightly pervious", .9 |
3, "Moderately pervious", .75 |
4, "Highly pervious", .5 |
Figure 2. Sample Soil Type Runoff Coefficient File.
Green & Ampt mapping file definitions and an example are given in Figure 3 and Figure 4.
ID1, "Soil type description 1", XKSAT1, RTIMP1, PCTEFFECTIVE1 |
ID2, "Soil type description 2", XKSAT2, RTIMP2, PCTEFFECTIVE2 |
ID3, "Soil type description 3", XKSAT3, RTIMP3, PCTEFFECTIVE3 |
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IDn, "Soil type description n", XKSATn, RTIMPn, PCTEFFECTIVEn |
Figure 3. Green & Ampt Soil Table File Format.
19, "Gunsight-Cipriano complex, 1-7% Slope", 0.63, 50.0, 0.0 |
18, "Greyeagle-Suncity Variant complex, 1-7% Slope", 0.23, 50.0, 0.0 |
17, "Gachado-Lomitas-Rock outcrop complex, 7-55% Slope", 0.16, 50.0, 20.0 |
72, "Lehmans-Rock outcrop complex, 8-65% Slope", 0.09, 50.0, 30.0 |
Figure 4. Sample Green & Ampt Soil Table File.
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