Water Equivalents Table

Water Equivalents Table

Unit of measurementEquivalent
1 gallon231 cubic inches

8.33 pounds

1 cubic foot7.48 gallons

62.4 pounds

1 acre foot*325,900 gallons

43,560 cubic feet

1 cubic foot per second (cfs)448.8 gallons per minute (gpm)
1 cfs @ 24 hours1.983 acre-feet
1 cfs @ 30 days59.5 acre-feet
1 cfs @ 1 year724 acre-feet
1,000 gallons per minute (gpm)2.23 cfs

4.42 acre-feet per day

1 million gallons3.07 acre-feet
1 million gallons per day (mgd)1,120 acre-feet per year
* One acre-foot is enough water to cover a football field one foot deep, or to supply two average families for one year.