WMS:MODRAT Tc Coverage Type
Use this type of coverage to define time of concentration arcs for a MODRAT simulation.
To change the attributes for feature arcs, select the arc(s) and click Attributes from the Feature Objects menu, or double-click on the arc. Feature arcs created in the Modrat Tc coverage can have the following conveyance types.
- street
- 1/2 street
- pipe
- channel
- mountain channel
- valley channel
- triangular channel
- overland
- none
The type of conveyance is important because water will flow much faster in a pipe than through a valley. The length and slope of the conveyance between collection points are also important in determining the effects of hydrologic routing. The conveyance lengths are determined by measuring the flow path length using a scale or GIS. This length information is combined with the elevation data from a DEM or topographic map to determine the slope.
Related Topics
WMS – Watershed Modeling System | ||
|---|---|---|
| Modules: | Terrain Data • Drainage • Map • Hydrologic Modeling • River • GIS • 2D Grid • 2D Scatter |  |
| Models: | CE-QUAL-W2 • GSSHA • HEC-1 • HEC-HMS • HEC-RAS • HSPF • MODRAT • NSS • OC Hydrograph • OC Rational • Rational • River Tools • Storm Drain • SMPDBK • SWMM • TR-20 • TR-55 | |
| Toolbars: | Modules • Macros • Units • Digitize • Static Tools • Dynamic Tools • Drawing • Get Data Tools | |
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