USGS Water-Year Summary 2024

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 -

10/01/2023- 09/30/2024 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. Data available prior to 10/01/2007 has been graded as unusable.

SPECIFIC CONDUCTANCE: October 1968 to current year. Data available prior to 10/01/2007 has been graded as unusable.

pH: October 1988 to current year. Data available prior to 10/01/2007 has been graded as unusable.

DISSOLVED OXYGEN: October 1988 to current year. Data available prior to 10/01/2007 has been graded as unusable.

REMARKS -

Accuracy rating of the record for the 2024 Water Year:

WATER TEMPERATURE: Good; Some large portions of data loss occurred mostly due to equipment malfunctions and monitor maintenance. The sensor underwent NIST checks on a quarterly basis, but no EWI, depth-integrated cross-section surveys were completed within this water year.

SPECIFIC CONDUCTIVITY: Good; Fouling and calibration drift corrections were applied throughout the water year. Some data loss occurred due to data deletions, equipment malfunctions, and monitor maintenance. Additionally, no cross-section surveys were completed throughout this water year.

PH: Fair; Fouling and calibration drift corrections were applied throughout the water year. Some data loss occurred due to data deletions, equipment malfunctions, and monitor maintenance. Additionally, no cross-section surveys were completed throughout this water year.

DISSOLVED OXYGEN: Poor; Fouling and calibration drift corrections were required throughout the water year, some of fairly large magnitude which exceeded the maximum allowable limit of corrections. Some data loss occurred due to data deletions, equipment malfunctions, and monitor maintenance. 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: 36.5°C on 08/01/2012*

Minimum: -1.0°C on 01/01/2018*

SPECIFIC CONDUCTANCE:

Maximum: 2170 µS/cm on 07/17/2018*

Minimum: 129 µS/cm on 08/17/2017

pH:

Maximum: 9.8 units on 06/06/2018*

Minimum: 6.7 units on 02/28/2015*

DISSOLVED OXYGEN:

Maximum: 23.0 mg/L on 06/15/2016

Minimum: 0.1 mg/L on 04/08/2009*

*Multiple occurrences of the same extreme following the date listed.