Oklahoma City Water Supply

Release of 30,000 acre-feet of water from Canton Lake for Oklahoma City water supply - February, 2013. This image shows discharge of about 700 cubic feet of water per second to the North Canadian River for the benefit of Oklahoma City (per long-standing contractual agreement). 700 cubic feet per second translates to about 315,000 gallons per minute, or about 453.6 million gallons per day discharging from Canton Lake. (An acre-foot = 325,900 gallons; therefore, the requested release of 30,000 acre-feet is equivalent to 9,777,000,000 gallons). At a release rate of 453.6 million gallons per day, about 21.5 days of flow (out of the lake) should have been required. Hope someone checks my math!