CALCULATING PMF FOR DAM ANALYSIS
CALCULATING PMF FOR DAM ANALYSIS
(OP)
I NEED TO CALCULATE A 25% PMF (PROBABLE MAXIMUM FLOOD) FOR AN EXISTING EARTHEN DAM. I AM USING A 1991 VERSION OF VHEC-1. I AM ABLE TO CALCULATE THE PMF BUT CAN'T FIGURE OUT HOW TO ACQUIRE THE DATA FOR THE 25%. ANY HELP IS GREATLY APPRECIATED.
RE: CALCULATING PMF FOR DAM ANALYSIS
The NFF program is available free from USGS.
Russ Faust
Salem, OR, USA
RE: CALCULATING PMF FOR DAM ANALYSIS
RE: CALCULATING PMF FOR DAM ANALYSIS
Russ Faust
Salem, OR, USA
RE: CALCULATING PMF FOR DAM ANALYSIS
RE: CALCULATING PMF FOR DAM ANALYSIS
By taking 25% of the total rainfall and then subtracting the losses, you will end up with less effective rainfall.
In my experience, the PMF is calculated and then design may be based on a fraction of this number. This is generally a requirement of the jurisdictional agency responsible for dam safety.
RE: CALCULATING PMF FOR DAM ANALYSIS
RE: CALCULATING PMF FOR DAM ANALYSIS