pollutant loading - annual vs. per rainfall event

[murdock]

I am looking at the new feature that provides the pollutant loading for subcatchment areas. IN the reports, it appears that the results give a quantity of pollutant per storm event. Is there a way to get an annual pollutant loading number from this new feature?

Thanks,

- shane

 

[psmart]

The loading is calculated per event only if you select "actual runoff" on the Settings|LandUse screen.

To get annual loading, select one of the other options under "imperviousness" and enter the total rainfall depth for the period of interest - such as the annual depth. These options use the Simple method and imperviousness to determine the (annual) runoff, and thence the (annual) pollutant loads.

For details please see

http://www.hydrocad.net/landuse.htm

...or press the Help button


Peter Smart
HydroCAD Software

http://www.hydrocad.net