USGS Water-Year Summary 2021
05341752 WILLOW RIVER AT WILLOW RIVER STATE PARK NEAR BURKHART, WI
LOCATION - Lat 45°00'42", long 92°42'30" referenced to North American Datum of 1983, in NW 1/4 SE 1/4 sec.8, T.29 N., R.19 W., St. Croix County, WI, Hydrologic Unit 07030005, on left bank, 0.4 mi downstream from outlet of Little Falls Lake and 2.1 mi southeast of Burkhart.
DRAINAGE AREA - 292 mi².
- The discharge record was revised for the period of 7/4/2017-10-3/2018 due to an incorrect gage height correction that was later verified by levels on 6/27/2018. For the affected period, the computed unit value discharge was estimated to be 5-7% high.
PERIOD OF RECORD - October 1998 to September 1999, June 2005 to September 2006, September 2012 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 710 ft above sea level, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Peak discharge of record is 1,890 cfs (8.05 ft) on 5/19/2017. Peak stage of record is 8.13 ft (1,860 cfs) on 6/2/2014.
PERIOD OF RECORD - October 2012 to current year.
INSTRUMENTATION - Water-quality sampler October 2012 to current year. Chemical analyses by the Water and Environmental Analysis Lab at the University of Wisconsin-Stevens Point. Analytes by water year are as follows: total phosphorus (2013-present), dissolved phosphorus and suspended sediment (2014-present), and total kjeldahl nitrogen, ammonia, nitrate/nitrite (2014-2015).