USGS Water-Year Summary 2017
05411600 Turkey River at Spillville, IA
LOCATION - Lat 43°12'26.2", long 91°57'01.2" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 NE 1/4 sec.19, T.97 N., R.9 W., Winneshiek County, IA, Hydrologic Unit 07060004, on right downstream side of bridge on County Highway W14 in Spillville, 0.6 mi upstream from Wonder Creek, and 98.5 mi upstream from mouth.
DRAINAGE AREA - 177 mi².
PERIOD OF RECORD - Discharge records from June 1956 to September 1973, October 1977 to September 1991, April 2010 to current year. Prior to October 1960, monthly mean discharge for some periods published in WSP 1728.
REVISED RECORDS - WDR IA-75-1: 1974.
GAGE - Water-stage recorder. Datum of gage is 1,036.73 ft above North American Vertical Datum of 1988. Prior to April 1, 2010, at datum 1,034.92 ft above National Geodetic Vertical Datum of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in June 1947 reached a stage of 18.40 ft, from high-water mark, at datum in use prior to April 1, 2010, discharge about 10,000 ft³/s.