USGS Water-Year Summary 2020
05428500 YAHARA RIVER AT EAST MAIN STREET AT MADISON, WI
LOCATION - Lat 43°05'22", long 89°21'39" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 NW 1/4 sec.7, T.7 N., R.10 E., Dane County, WI, Hydrologic Unit 07090001, at Main Street bridge in Madison.
DRAINAGE AREA - 235 mi² of which 36.6 mi² probably is noncontributing.
PERIOD OF RECORD - November 2003 to current year.
GAGE - Water-stage recorder. Side-looking velocity meter system. Datum of gage is 840.00 ft above NGVD of 1929. Prior to Oct. 1, 2005 datum was 843.22 ft above NGVD 1929.