Soil Editor
- Marybeth Bailey
The soil data tables contain soil parameters that are used to model infiltration process for the Subcatchments in the watershed. Infiltration behavior of a Subcatchment mainly depends on soil types in the subwatershed. Commonly, watersheds may consist of only few major/influential soil types. Therefore, rather than defining infiltration parameters for every subwatershed, it may be easier to define infiltration parameters for the major soil types in the watershed. The defined soil types could be associated to the subwatersheds in the drainage system. InfoSWMM allows association of multiple soil types to a subwatershed. Based on the soils coverage of the subwatershed and the infiltration parameters assigned to the soils, InfoSWMM internally calculates the actual infiltration parameters that are used by the model to estimate runoff.
For more information on these input data, you may refer to the soil editor.
Field | Description |
Soil ID | Name assigned to the soil type. |
Description | Description of the soil type. |
Max. Infiltration Rate | Maximum infiltration rate on Horton's curve. Required if Horton's method is used. |
Min. Infiltration Rate | Minimum infiltration rate on Horton's curve. Required if Horton's method is used. |
Decay Rate of Horton's Curve | Decay rate of Horton's curve. Required if Horton's method is used. |
DRYDAY_HRT | Dry weather regeneration factor for Horton's curve. Required if Horton's method is used. |
Max. Possible Infiltr. Volume | Maximum infiltration volume possible. Required if Horton's method is used. |
Capillary Suction | Soil capillary suction. Required if Green-Ampt method is used. |
Sat. Hydraulic Conductivity | Soil saturated hydraulic conductivity. Required if Green-Ampt method is used. |
Initial Soil Moisture | Deficit - Initial soil moisture deficit. Required if Green-Ampt method is used. |
Curve Number | Runoff Curve Number. Required if Curve-Number method is used. |
Sat. Hydraulic Conductivity | Soil saturated hydraulic conductivity. Required if Curve-Number method is used. |
DRYDAY_CN | Dry weather regeneration constant. Required if Curve-Number method is used. |