The United States Environmental Protection Agency developed a ready-to-use application that estimates the annual amount of rainwater and frequency of runoff from anywhere in the U.S. and Puerto Rico. This application is called the National Stormwater Calculator, and it can be downloaded right onto a computer desktop. Instructions on how to download this application are available.
This calculator is valuable because it’s aimed at people looking to reduce runoff from a property. While using the calculator, it will access national databases to provide information on soil, topography, rainfall and evaporation.
I took a crack at using the calculator and was able to figure out the annual amount of rainwater and frequency of runoff of the area where my house is located. So, give it a try like I did! It’s important to stay informed of such advancements to help protect our waterways.