USGS Water-Year Summary 2018
05340500 ST. CROIX RIVER AT ST. CROIX FALLS, WI
LOCATION - Lat 45°24'25", long 92°38'49" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 sec.30, T.34 N., R.18 W., Polk County, WI, Hydrologic Unit 07030005, St. Croix National Scenic Riverway, on left bank, 1,500 ft downstream from powerplant of Northern States Power Co., in St. Croix Falls, and at mile 52.2. Gage Address - 211 South River St.
DRAINAGE AREA - 6,240 mi². (revised 1982; previously 5,930 sq mi), from topographic map.
- WSP 1115: 1929. WDR WI-82-1: Drainage area.
PERIOD OF RECORD - January 1902 to current year. Prior to January 1910, monthly discharge only, published in WSP 1308. Prior to October 1939, published as "near St. Croix Falls." Monthly average data were published outside the period of daily data collection. These monthly data are not included in the monthly mean statistics.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 690.04 ft above NAVD of 1988. Prior to July 1905, gage heights and discharge measurements were used by Loweth and Wolff, consulting engineers of St. Paul, Minn., to determine the flow. July 1905 to February 1940, records were computed from power generation at the St. Croix Falls Powerplant. February 1940 to Sept. 30, 1979, water-stage recorder at site 300 ft downstream at same datum.
PERIOD OF RECORD - WATER TEMPERATURE: January 2000 to current year.
INSTRUMENTATION - Water temperature recorder since January 21, 2000, provides 15-minute readings.