Water Quantity Conversion Table
To convert from one water quantity measurement to another, multiply the existing measurement number by the number contained in the appropriate column at right.
CFS
GPM
MGD
AC-FT/YR
AC-FT/DAY
CFS
(cubic feet per second)
---
450
.646
724
1.98
GPM
(gallons per minute)
.00222
---
.00144
1.61
.00442
MGD
(million gallons per day)
1.55
695
---
1120
3.07
AC-FT/YR
(acre-feet per year)
.0014
.62
.00089
---
.00274
AC-FT/DAY
(acre-feet per day)
.504
226
.326
365
---

For example, to convert 140 million gallons per day (mgd) to cubic feet per second (cfs), you would multiply 140 times 1.55 to come up with the desired conversion, 217 cfs.

One acre-foot of water is equivalent to 325,851 gallons.


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