USGS Water-Year Summary 2019
10155000 PROVO RIVER NEAR HAILSTONE, UT
LOCATION - Lat 40°36'03", long 111°19'51" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 SW 1/4 sec.36, T.2 S., R.5 E., Wasatch County, UT, Hydrologic Unit 16020203, on left bank 0.25 mi downstream of bridge on State Highway 32, 4.5 mi upstream from Ross Creek and Hailstone.
DRAINAGE AREA - 230 mi².
- WDR UT-89-1, UT-93-1: Drainage area.
PERIOD OF RECORD - October 1949 to current year.
GAGE - Water-stage recorder. Elevation of gage is 6,220 ft above NGVD of 1929, from topographic map. Datum lowered 1.00 ft November 20, 1964. Gage relocated 1.5 mi upstream on April 8, 1993, to a site above the high water line of Jordanelle Reservoir, at different datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,100 ft³/s, Jun 7, 1986, from rating curve extended above 2,500 ft³/s; gage height, 9.91 ft, from floodmarks at site and datum then in use; maximum gage height, 10.15 ft, Jun 6, 2010; minimum discharge, 6.87 ft³/s, Aug 9, 2018.