One of the common things to submit with LEED certification of projects is the rate and quantity of stormwater runoff. Rates are easy, but determining the quantity of runoff can be a real bear if you've got some losses due to an exfiltration system, or combination of exfiltration systems. Is there an easy way to find out exactly how much volume of runoff passes through a link without having to export the hydrograph and integrate it manually?

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com