USGS Water-Year Summary 2023
06345780 HEART RIVER ABOVE LAKE TSCHIDA NEAR GLEN ULLIN, ND
LOCATION - Lat 46°39'25", long 102°04'44" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.30, T.137 N., R.90 W., Grant County, ND, Hydrologic Unit 10130202, on right bank 100 ft downstream from bridge on county road and 16 mi south and 1 mi west of Hebron.
DRAINAGE AREA - 1,530 mi². approximately.
SURFACE-WATER RECORDS
PERIOD OF RECORD - DAILY DISCHARGE--July 1988 to current year.
PERIOD OF RECORD.--DAILY GAGE HEIGHT--October 1999 to current year.
GAGE - Water-stage recorder. Datum of gage is 2,092 ft above NAVD88, from topographic map. In October 2019, datum was converted to NAVD88 datum using the National Geodetic Surveys VDATUM transformation tool. Prior to conversion to NAVD88 datum was published as 2,090 ft above NGVD29, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum peak flow, about 15,300 ft³/s, Mar. 24, 2019, peak stage 22.81 ft. For the March to April 2009 high-water period, a maximum stage of 25.79 ft, March 23, 2009, from flood mark, was noted. This peak maximum may have been exceeded during the period of no stage record, April 11-24, 2009.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water year 1988 to 2012.