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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 2025
04145000 SHIAWASSEE RIVER NEAR FERGUS, MI
LOCATION - Lat 43°15'17", long 84°06'20" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.22, T.10 N., R.3 E., Saginaw County, MI, Hydrologic Unit 04080203, on right bank at downstream side of bridge on Fergus Road, 1.2 mi east of Fergus, 1.8 mi upstream from Bear Creek, and 14 mi upstream from mouth.
DRAINAGE AREA - 637 mi².
REVISIONS HISTORY - WSP 1337: 1940(M), 1941-42, 1943(M), 1944, 1945(M), 1946, 1947(M), 1948, 1950. WSP 1627: 1952, 1954(M), 1957.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1939 to September 1984, October 1988 to September 1994, October 2001 to September 2011, and October 2022 to current year. Monthly discharge only for some periods, published in WSP 1307.
GAGE - Water-stage recorder. Datum of gage is 584.94 ft above NAVD88. Prior to Aug. 22, 1968, nonrecording gage at same site and datum. Prior to Oct. 1, 1970, at datum 2.00 ft higher.
REMARKS - Records good except for estimated daily discharges, which are poor. Some regulation at low stages by power plant at Shiawasseetown prior to February 1953; occasional regulation at low stages since. Gage-height telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 7,500 ft³/s, Apr. 6, 1947, including overflow by-passing gage; maximum gage height, 15.44 ft, present datum, Mar. 29, 1960; minimum discharge, 27 ft³/s, Aug. 8, 1966; minimum gage height, 0.04 ft, Sept. 21, 22, 2003.
