USGS Water-Year Summary 2020
05455500 English River at Kalona, IA
LOCATION - Lat 41°28'11", long 91°42'52" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 SW 1/4 sec.18, T.77 N., R.7 W., Washington County, IA, Hydrologic Unit 07080209, on the downstream side of the bridge on State Highway 1, 0.8 mi south of Kalona, 1.1 mi upstream from Camp Creek, 4.5 mi downstream from Smith Creek, and 17.0 mi upstream from mouth.
DRAINAGE AREA - 574 mi².
- WSP 1438: Drainage area. WSP 1558: 1940(M), 1941. WSP 1708: 1956, 1957(P), 1958(P).
PERIOD OF RECORD - Discharge records from September 1939 to current year.
GAGE - Water-stage recorder. Datum of gage is 633.45 ft above National Geodetic Vertical Datum of 1929 (levels by U.S. Army Corps of Engineers). Prior to December 27, 1939, non-recording gage at site 30 ft downstream at same datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in June 30, 1930, reached a stage of 19.90 ft, from high-water mark, from information by local residents, discharge 18,500 ft³/s.