Hydro Solutions Of Texas, Ltd. Pumps Parts and Service
Ernie Welker        Cybil W.
​  Phone : 210-399-1494
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How much rain can I collect?
The amount of rainfall that you can collect is governed by the following
formula:

1" of rain x 1 sq. ft. = 0.623 gallons

Or put in an easy form to remember :

1" of rain from 1,000 sq. ft. will provide 623 gallons


To calculate the amount of rainwater you can collect, you need to know your annual average precipitation for your area.  You can use the precipitation map below to find an approximate amount for your area (click for a zoomed image).

Picture