USGS Water-Year Summary 2019
06471200 MAPLE RIVER AT NORTH DAKOTA-SOUTH DAKOTA STATE LINE
LOCATION - Lat 45°56'20", long 98°27'08" referenced to North American Datum of 1927, in SW 1/4 SE 1/4 sec.33, T.129 N., R.62 W., Dickey County, ND, Hydrologic Unit 10160004, on left bank 0.4 mi upstream from State line, 7.8 mi northeast of Frederick, SD, and 15.7 mi upstream from mouth.
DRAINAGE AREA - 766 mi² of which 281 mi² probably is noncontributing.
- WDR SD-10-1: Drainage area.
PERIOD OF RECORD - June 1956 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,366 ft above NAVD88, from topographic map. Prior to conversion to NAVD88 datum was published as 1,365 ft above NGVD29, from topographic map. Prior to Jun. 14, 1962, a nonrecording gage was located at site 0.4 mi downstream and determined to be at a datum 1,364.06 ft above NGVD 29.
EXTREMES FOR PERIOD OF RECORD - Lowest annual mean, 0.00 ft³/s, occurred in 1959, 1988, and 1990. Minimum daily discharge, 0.00 ft³/s, Oct. 1, 1956, no flow for long periods in most years.