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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.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
07249455 ARKANSAS RIVER NEAR FORT SMITH, AR
LOCATION - Lat 35°23'30", long 94°25'56" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.08, T.8 N., R.32 E., Sebastian County, AR, Hydrologic Unit 11110104, at U.S. Highway 64 bridge at Oklahoma and Arkansas state line, .7 mi downstream from Poteau River, 6.6 mi upstream from Lee Creek, 8.0 mi upstream from Arkansas River at Van Buren, and at mile 324.5.
DRAINAGE AREA - 145,940 mi² of which 16,285 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 - May 1997 to current year. Some data collected prior to period of record and are available in the district office.
GAGE - Water-stage recorder. Current datum in use is 380.49 feet NAVD88. The current datum is derived from differential levels set on 09/20/2022 to RM-14. RM-14 is also a NGS point identified as FH0928. Prior to 10/01/2022 the datum in use was 380.24 feet NGVD29. Flow regulated by W.D. Mayo Lock and Dam 14 upstream and J.W. Trimble Lock and Dam 13 downstream.
REMARKS -
Quality of data for all periods can be obtained by contacting the Oklahoma-Texas Water Science Center.
All estimated records and flows below 3,000 ft³/s are considered poor unless noted otherwise.
WATER-QUALITY RECORDS
PERIOD OF RECORD - July 1996 to current year.
REMARKS - Samples collected periodically by the United States Geological Survey. Specific conductance, pH, water temperature, turbidity and dissolved oxygen were determined in the field.
