(NOAA, 2020)
For weep berm, the rainfall depths of concern are:
1 year-6 hour storm event: P = 1.78 in
5 year-24 hour storm event: P = 3.72 in
Runoff volume was found to be:
1 year-6 hour storm event: Q = 0.037 in
5 year-24 hour storm event: Q = 0.67 in