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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
05372995 SOUTH FORK ZUMBRO RIVER AT ROCHESTER, MN
LOCATION - Lat 44°03'42", long 92°27'58" referenced to North American Datum of 1927, Olmsted County, MN, Hydrologic Unit 07040004, on left bank 50 ft downstream from 37th Street bridge, 0.2 mi upstream from wastewater treatment plant, and 2.0 mi downstream from Silver Lake Dam.
DRAINAGE AREA - 303 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 1981 to current year.
GAGE - Water-stage recorder. Datum of gage is 950.00 ft above sea level (NGVD of 1929). Prior to Mar. 1981, recording gage at site 0.6 miles downstream. Record published as "near Rochester, MN" and under downstream order number 05373000. Peak flow record is considered equivalent at both sites but daily-mean streamflows are not.
REMARKS - Some regulation at times from Silver Lake.
Record good except those for estimated daily-mean discharge, which are poor.
Record good except those for estimated daily-mean discharge, which are poor.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of July 6, 1978, reached a stage of about 28.0 ft, on upstream side of bridge at present gage location, discharge 30,500 ft³/s. This is the highest known stage since at least 1908. Peakflows at this current site (05372995) and previous site (05373000) located about 1/3 mile downstream are considered equivalent. Peakflow database for 05372995 contains peaks for 05373000 as well.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 12,100 ft³/s, stage, 17.08 ft, Sept. 24, 2010; maximum stage, 20.77 ft, Sept. 21, 1986 (prior to levee work done from 1988 to 1990); minimum discharge, 10 ft³/s, Oct. 23, 1981 (due in part to regulation).
WATER-QUALITY RECORDS
COOPERATION - Minnesota Pollution Control Agency, St. Cloud State University and University of St. Thomas.
REMARKS - The U.S. Geological Survey and Minnesota Pollution Control Agency in collaboration with St. Cloud State University and University of St. Thomas collaborated on a study to measure the concentrations of endocrine active chemicals and pharmaceuticals in water samples collected from the effluents from wastewater treatment plants and at sites upstream and downstream of effluent discharge in Minnesota during 2009-2011.
