[Greenbuilding] quick tools for calculating rainwater run-off?

[Joe Killian]

  One cubic foot = 7.481 gallons.
Thus, keeping the 1 square foot base constant, one gallon is 1 / 7.481 
feet, or about 1.6"


On 2/15/2011 8:34 PM, Jason Holstine wrote:
> I believe the calc is = every square foot of roof surface gives one 
> gallon of water for every 1/4" of rainfall.
>
>
> On 2/15/11 8:14 PM, "Erin Rasmussen" <erin at trmiles.com> 
> wrote:ioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
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