Runoff Calculator Page 3: Eastern US Precipitation Data
This page will help you determine the precipitation depth of a design storm in your area. The particular storm is one that would last for 24 hours, and has the probability of returning once every 10 years.
This specific storm event is often suggested by design manuals to size stormwater structures to reduce the contribution of runoff volumes to the sewer system.
Step 1:
Identify the map of the continental US should be displayed below.Step 2:
Click on the county which contains your property area.Step 3:
After you click, a depth should appear in the field below.
If you are satisfied with this number, click Submit and move onto the next page.
