Difference between revisions of "Module Runoff"
From MohidWiki
Davidbrito (talk | contribs) (→Other Features) |
Davidbrito (talk | contribs) (→How To Generate Manning Coefficients) |
||
| Line 7: | Line 7: | ||
===How To Generate Manning Coefficients=== | ===How To Generate Manning Coefficients=== | ||
Manning coefficients must be provided in runoff data file. | Manning coefficients must be provided in runoff data file. | ||
| + | |||
Options: | Options: | ||
* Use a constant value | * Use a constant value | ||
Revision as of 18:28, 26 March 2009
Contents
Overview
Module Runoff calculates the overland surface runoff over a regular structured grid as function of precipitation, infiltration and terrain slope. In the first case infiltration is calculated by Richards equation and runoff calculated by Manning’s equation.
Main Processes
Other Features
How To Generate Manning Coefficients
Manning coefficients must be provided in runoff data file.
Options:
- Use a constant value
- Define a Manning's grid: One possible option is to associate Manning with land use classes (shape file). In this case can use MOHID GIS going to menu [Tools]->[Shape to Grid Data] and provide: i) the grid (model grid), ii) the land use shape file and iii) the corespondence between land use codes and Manning.
