USGS Water-Year Summary 2020
06441592 MISSOURI RIVER BELOW LA FRAMBOISE ISLAND, AT PIERRE, SD
LOCATION - Lat 44°20'46", long 100°19'12" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 NW 1/4 sec.10, T.110 N., R.79 W., Hughes County, SD, Hydrologic Unit 10140101, on left bank at downstream end of La Framboise Island Recreation Area, 2.4 mi downstream from Bad River, 3.0 mi downstream from U.S. Highways 14 and 83, 9.9 mi downstream from Oahe Dam, and at mile 1,062.4.
DRAINAGE AREA - 246,607 mi². approximately.
- WDR SD-05-1: 2004 (previously unpublished mean daily gage heights, Oct. 7, 8, Nov. 9, 10).
PERIOD OF RECORD - October 1998 to current year, seasonal records only beginning October 2005. Note: Entire 2011 Water Year was published due to flood conditions.
GAGE - Water-stage recorder. Datum of gage is 1,401 ft above NAVD88. Datum was converted to NAVD88 on Oct. 1, 2019 datum using the National Geodetic Surveys VDATUM transformation tool. Prior to conversion to NAVD88 on Oct. 1 2019 datum was published a1,400 ft above NGVD29.
EXTREMES FOR PERIOD OF RECORD - Maximum stage, 32.37 ft, June 21, 2011.