1000 sq. ft. of catchment area will fill a 60 gallon rain barrel with 1/10 inch of rain
60 gallons can cover about 100 square feet of garden or lawn with one inch of water
Sewer usage is commonly measured by your incoming water: Your sewer bill is estimated by the number of gallons of water that you use. Avoid paying sewer fees on the water that you use outdoors by using a rain barrel!
In New England a single rain barrel collecting water off your roof is estimated to save as much as 1,700 gallons during extended summer season