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Water-Year Summary for Site USGS 07072500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
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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
LOCATION - Lat 36°06'09", long 91°05'52" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 sec.21, T.17 N., R.1 W., Lawrence County, AR, Hydrologic Unit 11010009, on right bank beneath U.S. HWY 63 bridge at Black Rock, 3.7 mi downstream from Spring River, and at river mile 69.3.
DRAINAGE AREA - 7,370 mi².
REVISIONS HISTORY - WSP 1211: 1930 to 1931. WDR Arkansas 1973: Drainage area.
PERIOD OF RECORD - Oct 1929 to Sep 1931 and Oct 1939 to current year. Gage height records collected since 1904 in same vicinity are contained in reports of National Weather Service.
GAGE - Water-stage recorder. Datum of gage is 229.56 ft above NGVD of 1929. Prior to Aug 1, 1946, nonrecording gage at site 900 ft upstream at same datum. Aug 1, 1946 to Aug 17, 1978, nonrecording gage at site 650 ft upstream at same datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Aug 1915 reached a stage of 31.9 ft, from records of National Weather Service, discharge 160,000 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge 190,000 ft³/s Dec 4, 1982 from rating curve extended above 105,000 ft³/s. Maximum peak stage 31.51 ft Dec 4, 1982 from floodmarks
EXTREMES FOR PERIOD PRIOR TO REGULATION - Annual mean 8,827 ft³/s prior to regulation, water years 1930 to 1931 and 1940 to 1947, 7,854 ft³/s