USGS Water-Year Summary 2023

07241550 NORTH CANADIAN RIVER NEAR HARRAH, OK

LOCATION - Lat 35°30'01", long 97°11'37" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.22, T.12 N., R.1 E., Oklahoma County, OK, Hydrologic Unit 11100302, on left bank downstream side county road bridge, 2.2 mi northwest of Harrah, 3.8 mi downstream from Choctaw Creek, and at mile 230.0.

DRAINAGE AREA - 13,775 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 1968 to current year.

GAGE - Water-stage recorder. Datum of gage is 1056.03 above NAVD of 1988 determined by GNSS Level 4 Survey using Alltera network with RTK Trimble R-10 tied to RM-8 by USGS Personnel on 05/12/22. Previous datum of gage is 1055.69 ft above NGVD of 1929.

REMARKS -

10/01/2022- 09/30/2023 records good. 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 by Lake Overholser (station 07240500) where diversions are made into Lake Hefner Canal (station 07240000). Low flow sustained in part by sewage effluent.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

WATER TEMPERATURE: October 1968 to current year.

SPECIFIC CONDUCTANCE: October 1968 to current year.

pH: October 1988 to current year.

DISSOLVED OXYGEN: October 1988 to current year.

REMARKS -

Accuracy rating of the record for the 2023 Water Year:

WATER TEMPERATURE: Excellent; Some large data gaps occurred, mainly from data deletions, equipment malfunctions, and monitor maintenance. Due to the Temperature sensor failing during the previous water year, all of the temperature data between 10/01/2023 through 10/25/2023 was removed. The sensor underwent NIST checks on a quarterly basis, and no EWI cross-section surveys were completed within this water year.

SPECIFIC CONDUCTIVITY: Fair; Some fouling and calibration drift corrections were applied. Some data loss occurred due to data deletions, equipment malfunctions, and monitor maintenance. Due to the temperature sensor failing during the previous water year, all of the specific conductivity data between 10/01/2023 through 10/25/2023 was removed as specific conductivity measurements depend on temperature. Additionally, no cross-section surveys were completed throughout this water year.

PH: Fair; Moderate fouling and calibration drift corrections were applied. Some data loss occurred due to data deletions, equipment malfunctions, and monitor maintenance. Due to the temperature sensor failing during the previous water year, all of the pH data between 10/01/2023 through 10/25/2023 was removed as pH measurements depend on temperature. Additionally, no cross-section surveys were completed throughout this water year.

DISSOLVED OXYGEN: Poor; Many fouling and calibration drift corrections, some of fairly large magnitude which exceeded the maximum allowable limit of corrections. Some large data gaps occurred. Due to the temperature sensor failing during the previous water year, all of the dissolved oxygen data between 10/01/2023 through 10/25/2023 was removed as dissolved oxygen measurements depend on temperature. Additionally, no cross-section surveys were completed throughout this water year.

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 38.0°C on 8/28/2011; Minimum -1.5°C on 1/15/2007

SPECIFIC CONDUCTANCE: Maximum 4700 µS/cm on 9/25/1980; Minimum 125 µS/cm on 4/21/1990

pH: Maximum 9.9 units on 7/25/2002; Minimum 6.2 units on 5/19/2003

DISSOLVED OXYGEN: Maximum 29.4 mg/L on 6/27/2010; Minimum 0.10 mg/L on 4/9/2009 & 4/27/2009