USGS Water-Year Summary 2023

07241000 NORTH CANADIAN RIVER BELOW LAKE OVERHOLSER NEAR OKLAHOMA CITY, OK

LOCATION - Lat 35°28'43", long 97°39'47" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.31, T.12 N., R.4 W., Oklahoma County, OK, Hydrologic Unit 11100301, on left downstream side of bridge on NW 10th Street, 0.5 mi downstream from Lake Overholser, 2.4 mi upstream from Mustang Creek, 9.1 mi southwest of State Capitol of Oklahoma, and at river mile 281.0.

DRAINAGE AREA - 13,493 mi² of which 3,497 mi² probably is noncontributing. From automated delineation using 10-meter National Elevation Dataset digital elevation model data dated 10/01/2006 and Watershed Boundary Dataset dated 10/01/2006, using Albers Equal-Area Projection, North American Datum 1983.

REVISIONS HISTORY - WDR 2012: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1952 to September 1968, October 1969 to September 1972, October 1973 to September 1987, October 1988 to current year.

GAGE - Water-stage recorder. Datum of gage is 1195.12 above NAVD of 1988 determined by GNSS Level 4 Survey using Alltera network with RTK Trimble R-10 tied to RM-11 by USGS Personnel on 06/25/20. Previous datum was 1,194.66 ft above NGVD of 1929. Prior to Oct. 1, 1961, at datum 10.00 ft higher. Prior to March 24, 1971, gage located at current site. March 25, 1971, to Sept. 30, 1987, gage located 200 ft upstream. 

REMARKS -

10/1/2022 - 09/30/2023: records fair.

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

Flow regulated by Canton Lake (station 07238500) and Lake Overholser (station 07240500). Diversions upstream from station into Lake Overholser and Lake Hefner Canal (station 07240000).

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 19,900 ft³/s, Aug. 21, 2007, maximum gage height, 29.85 ft, May 28, 1987, from high-water mark; no flow at times.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

WATER TEMPERATURE: October 1988 to July 2023. Sonde was removed July 2023 (temporarily) due to ongoing construction activities.

SPECIFIC CONDUCTANCE: October 1988 to July 2023. Sonde was removed July 2023 (temporarily) due to ongoing construction activities. 

pH: October 1988 to June 1991.

DISSOLVED OXYGEN: October 1988  to July 2023. Sonde was removed July 2023 (temporarily) due to ongoing construction activities.

REMARKS -

Accuracy rating of the record for the 2023 Water Year:

WATER TEMPERATURE: Good; various data gaps occurred throughout the year due to an equipment malfunctions and threshold suppressions. This sensor underwent NIST checks on a quarterly basis, and one cross section survey was completed to verify stream mixing and sonde placement. On 07/31/2023, the water quality monitor was temporarily removed from the site due to ongoing construction activities disrupting monitoring capabilities. No data was collected between 07/31/2023 - 09/30/2023.

SPECIFIC CONDUCTIVITY: Good; Fouling and calibration drift corrections applied consistently throughout the year, but numerous data gaps, equipment malfunctions, and deletions reduced overall accuracy. On 07/31/2023, the water quality monitor was temporarily removed from the site due to ongoing construction activities disrupting monitoring capabilities. No data was collected between 07/31/2023 - 09/30/2023.

DISSOLVED OXYGEN: Poor; Several fouling and calibration drift corrections were applied throughout the year; large data corrections and portions of missing or deleted data reduced the overall accuracy. Efforts are being made by the QW team to increase the frequency of site visits to improve data quality and minimize fouling effects. On 07/31/2023, the water quality monitor was temporarily removed from the site due to ongoing construction activities disrupting monitoring capabilities. No data was collected between 07/31/2023 - 09/30/2023.

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

EXTREMES FOR PERIOD OF RECORD -

WATER TEMPERATURE: Maximum 38.7°C on 7/18/2006; Minimum -0.94°C on 3/4/2019

SPECIFIC CONDUCTANCE: Maximum 2050 µS/cm on 11/19/1991; Minimum 81 µS/cm on 10/25/2000

PH: Maximum 8.9 units on 10/27/1989, 11/27/1989, 9/15/1990, & 9/17/1990; Minimum 6.2 units on 8/8/1989

DISSOLVED OXYGEN: Maximum 22.7 mg/l on 3/21/2004; Minimum 0.1 mg/L on several days in summer months