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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
07324200 WASHITA RIVER NEAR HAMMON, OK
LOCATION - Lat 35°39'23", long 99°18'21" referenced to North American Datum of 1927, in sec.26, T.14 N., R.20 W., Custer County, OK, Hydrologic Unit 11130301, on right bank near county road bridge, 2.2 mi downstream from Quartermaster Creek, 4.7 mi northeast of Hammon, and at mile 494.5.
DRAINAGE AREA - 1,367 mi² of which 12 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 - OK-92-2: 1987. WDR 2012: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1969 to September 1987, October 1989 to current year.
GAGE - Water-stage recorder. Datum of gage is 1643.60ft NAVD of 1988 determined by GNSS 4hr observation Survey with Trimble R-10 tied to RM-7 by USGS Personnel on 08/01/2022. Prior to 08/01/2022 datum of gage was 1643.22ft NGVD 1929.
REMARKS - 10/01/2022 - 09/30/2023: records good, except for estimated periods which are fair. Quality of data for other periods can be obtained by contacting the Oklahoma-Texas Water Science Center. Flow regulated since 1961 by numerous flood-retarding structures.
EXTREMES FOR PERIOD OF RECORD - Peak of record discharge of 6,000 ft³/s, May 17, 1982, from rating curve extended above
2,500 ft³/s on basis of slope-area measurement.
