Download U.S. EPA's latest version of the National Stormwater Calculator. This desktop application provides data on annual rainwater and frequency of runoff based on local conditions. The application can be used by site developers, landscape architects, urban planners and even homeowners. The latest version includes a Climate Assessment Tool, providing decision-makers with resources to incorporate green infrastructure and low impact development techniques to reduce storm water runoff. 

IEPA Highlights

National Stormwater Calculator

Mon Feb 3, 2014 at 12:00 PM

Download U.S. EPA's latest version of the National Stormwater Calculator. This desktop application provides data on annual rainwater and frequency of runoff based on local conditions. The application can be used by site developers, landscape architects, urban planners and even homeowners. The latest version includes a Climate Assessment Tool, providing decision-makers with resources to incorporate green infrastructure and low impact development techniques to reduce storm water runoff.