USGS Water-Year Summary 2024

06478513 JAMES RIVER NEAR YANKTON SD

LOCATION - Lat 42°59'45", long 97°22'10" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.05, T.94 N., R.55 W., Yankton County, SD, Hydrologic Unit 10160011, on left bank at downstream side of county highway bridge, 3.9 mi upstream from Beaver Creek, 17.2 mi upstream from mouth, and 9.0 mi northeast of Yankton.

DRAINAGE AREA - 20,962 mi² of which 2,056 mi² probably is noncontributing.

REVISIONS HISTORY - WDR SD-11-1: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1981 to September 1995 (continuous-record), October 1995 to September 2004 (crest-stage partial record), October 2009 to current year.

GAGE - Water-stage recorder. Datum of gage is 1,154.08 ft above NAVD88. Prior to conversion to NAVD88 datum was published as 1,153.38 ft above NGVD29.

REMARKS - Accuracy of records for water years prior to 2014 are noted in the individual Annual Data Reports for those water years. For water years 2014 onward, records good except those for Oct. 1, 2017 to Sept. 30, 2018 and Dec. 15, 2021 to Oct. 4, 2022, which are fair and those for estimated discharges, which are poor. Low flow regulated by dams forming Arrowwood and Jim Lakes, combined capacity, 16,530 acre-ft, and by dam forming Jamestown Reservoir, capacity, 229,470 acre-ft, since May 1953, and by dam forming Pipestem Reservoir, capacity, 147,000 acre-ft, since 1973. Occasional backwater caused by Beaver Creek. Satellite data-collection platform at station.