USGS Water-Year Summary 2022
06441595 MISSOURI RIVER AT FARM ISLAND, NEAR PIERRE, SD
LOCATION - Lat 44°20'03", long 100°15'54" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 NE 1/4 sec.18, T.110 N., R.78 W., Hughes County, SD, Hydrologic Unit 10140101, On left bank of Farm Island Recreation Area, 4.8 mi downstream from La Framboise gage, 4.9 mi southeast of Pierre, 5.2 mi downstream from Bad River, 13.1 mi downstream from Oahe Dam, and at mile 1,059.2.
DRAINAGE AREA - 246,607 mi². approximately.
- WDR SD-90-1: Datum.
PERIOD OF RECORD - October 1988 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,401 ft above NAVD88. Datum was converted to NAVD88 datum using the National Geodetic Surveys VDATUM transformation tool. Prior to conversion to NAVD88 on Oct. 1, 2019 datum was published as 1,400 ft above NGVD29.