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Water-Year Summary for Site 07240000

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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
07240000 LAKE HEFNER CANAL NEAR OKLAHOMA CITY, OK
LOCATION - Lat 35°33'11", long 97°37'11" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.34, T.13 N., R.4 W., Oklahoma County, OK, Hydrologic Unit 11050002, attached to left wing wall just downstream from outlet of inverted siphon, 2,600 ft upstream from Lake Hefner, 3.0 mi northeast of Bethany, and 7.6 mi northwest of the State Capitol in Oklahoma City.
REVISIONS HISTORY - WDR OK 80-1: 1968-80(Datum).
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 1944 to current year.
GAGE - Water stage recorder and concrete control. Datum of gage is 1195.96  above NAVD of 1988 determined by GNSS Level II Survey using Alltera network with RTK Trimble R-10 tied to  RM-4 by USGS Personnel on 08-01-2019. Prior to 08-01-2019  datum of gage was 1,196.06 ft above NGVD of 1929. Prior to Apr. 8, 1947, nonrecording gage at site 2.7 mi upstream at different datum. Apr. 8, 1947, to Apr. 30, 1950, water-stage recorder at site 3.0 mi upstream at different datum. May 1, 1950 to May 19, 1954, Apr. 26, 1957 to Feb. 19, 1968, at present site and datum 4.90 ft higher. May 20, 1954,to Apr. 25, 1957, water-stage recorder and concrete control at site 2,500 ft downstream at datum 2.10 ft higher than present datum.
REMARKS -

10/01/2022 - 09/30/2023: records rated good. 

Quality of data for other period can be obtained by contacting the Oklahoma-Texas Water Science Center.

Use of canal began in March 1944. Canal diverts water from North Canadian River just upstream from Lake Overholser (station 07240500) and delivers water to Lake Hefner, capacity, 80,600 acre-ft, for municipal water supply of Oklahoma City. Subsequent to April 1950, small ground-water seepage, when head gates are closed, included in records.

EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 1,630 ft³/s, Dec. 17, 1999. Maximum gage height of 7.31 occurred on May 6, 2015; no flow at times multiple years.