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LOCATION .--Lat 42°43'52", long 90°38'25", in SW 1/4 sec.17, T.3 N., R.2W., Grant County, Hydrologic Unit 07060003, on right bank just downstream from bridge on County Trunk Highway B, 0.8 mi upstream from Blakely Branch, 2.2 mi east of Rockville, 4.5 mi northeast of Potosi, and 15.2 mi upstream from mouth.
DRAINAGE AREA .--142 square miles.
PERIOD OF RECORD .--October 1934 to present. Monthly discharge for October and November 1934 published in WSP 1308.
REVISED RECORDS .--WSP 1438: 1935-36, 1937(M), 1939(M), 1941-43(M), 1946(M). WDR WI-76-1: Drainage area.
GAGE .--Water-stage recorder and crest-stage gage. Datum of gage is 642.36 ft above sea level NAVD88. Prior to Oct. 1, 1941, nonrecording gage at site 1.3 mi upstream at datum 12.55 ft higher. Oct. 1, 1941, to June 29, 1949, nonrecording gage at present site and datum.
REMARKS .--Gage-height telemeter at station.
OPERATED IN COOPERATION WITH:
U.S. Army Corps of Engineers - Rock Island District
Additional Information:
National Weather Service Flood Forecast Page
Boating safety tips |
Min (1938) | 25th percen- tile | Median | Mean | 75th percen- tile | Most Recent Instantaneous Value Nov 21 | Max (1993) |
---|---|---|---|---|---|---|
25.0 | 48 | 71 | 82 | 96 | 216 | 408 |