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Water-Year Summary for Site 07152000

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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
07152000 CHIKASKIA RIVER NEAR BLACKWELL, OK
LOCATION - Lat 36°48'41", long 97°16'37" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.23, T.27 N., R.1 W., Kay County, OK, Hydrologic Unit 11060005, near left bank on downstream side of State Highway 11 bridge at northeast edge of Blackwell, 0.1 mi downstream from Bitter Creek, and at mile 28.3.
DRAINAGE AREA - 1,876 mi² of which 3 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 - WSP 1117: Drainage area, WDR 2012: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD -

October 1935 to current year. Monthly discharge only for some periods, published in WSP 1311. Gage was inactive 04/02/2020-09/30/2020 as a result of bridge reconstruction.

GAGE - Water-stage recorder. Datum of gage is 967.65 feet above NAVD of 1988. The NAVD of 1988 datum was determined by a Level II GNSS survey (Reference Frame NAD_83(2011) (EPOCH:2010.0000) ITRF2014 (EPOCH:2022.6074) (GEOID18) by USGS personnel on 8/10/2022 and tied to RM-2. Prior to 8/10/2022 the datum of gage was 967.41 ft above NGVD of 1929. See WSP 1921 for history of changes prior to April, 1952
REMARKS -

10/01/2022 - 09/30/2023: records fair. Quality of data for other periods can be obtained by contacting the Oklahoma-Texas Water Science Center.  Some regulation at low flow by Lake Blackwell, capacity 3,600 acre-ft, 12.6 mi upstream from station. Small diversion made from reservoir for municipal supply.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 10, 1923, reached a stage of about 34 ft, present site and datum, from information provided by local residents, discharge 100,000 ft³/s.