Water Volume Calculations:

How much water will I collect?

How many square feet is one side of the roof?

Width _________ X Length ________ = ____________ sq ft

1 inch of rain = .0833 ft of rain (1/12)

_________ sq ft X .0833 ft rain = __________ cu ft of water

1 gallon = 7.48 cu. ft of water

_________ cu ft of water x 7.48 = _________ gallons of water collected from a one inch rain.

How many downspouts are on that side of the house?

 

What should the dimensions of the rain garden? Width, Length and Depth?

 

How many gallons will your rain barrel(s) hold?

 

Do you need a catchment for you rain barrel overflow?

 

What plants would you choose?