The problem is not figuring out the average runoff, but the runoff potential for a "100 year flood". Lately, those have been happening more frequently than 100 years. Contact the local NRCS office and they can help - maybe they could help with just a phone call?

When Hurricane Ike rolled thru here in September 2008, we had over 12" of rain in one day. If that happened to you, that would be 10 ac/ft of water hitting your pond. That'd be 3,260,000 gallons........

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).