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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.
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USGS Water-Year Summary 2024
07257500 ILLINOIS BAYOU NEAR SCOTTSVILLE, AR
LOCATION - Lat 35°27'59", long 93°02'28" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 sec.31, T.10 N., R.19 W., Pope County, AR, Hydrologic Unit 11110202, on downstream side of bridge on State Hwy 164, 1.3 mi north of Scottsville, and 3.1 mi downstream from North Fork Illinois Bayou.
DRAINAGE AREA - 241 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct 1947 to Sep 1970 and Oct 1999 to current year. Annual maximum water years 1971 to 1999.
GAGE -
Water-stage recorder. Datum of gage is 447.63 ft above NAVD of 1988 (Reference Frame NAD_83 (2011) (EPOCH:2010.0000), (GEOID18).
Prior to August 10, 2022 the Datum of Gage was 488.54 ft above NAVD of 1988.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of May 10, 1943, reached a stage of 24.6 ft, from floodmark set by local residents (discharge, 77,000 ft³/s).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge 130,000 ft³/s Dec 3, 1982, from rating curve extended above 56,100 ft³/s on basis of contracted-opening and flow-over-road measurement of peak flow and occurred during period of computation of annual maximum only, water years 1971 to 1999.
