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During the winter, river stage may be significantly affected by backwater from ice, resulting in incorrect discharge data. Consequently, discharge data may not be displayed during periods of ice effect.
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LOCATION.--Lat 43°05'42", long 89°22'12", in NW 1/4 SE 1/4 sec.12, T.7 N., R.9 E., Dane County, Hydrologic Unit 07090001, in city boat house at dam at outlet, in Madison. 

DRAINAGE AREA. --233 square miles, 36.6 is non-contributing. Area of Lake Mendota, 15.2 square miles. 

PERIOD OF RECORD.--December 1902 to May 1903, January 1916 to January 1985(incomplete), February 1985 to present. 

REVISED RECORDS.--WDR WI-73-1: Drainage area. 

GAGE.--Water-stage recorder. Datum of gage is 839.96 NAVD8. Previously listed a 840.00 NGVD 1929, or 5.60 ft below City of Madison datum. Prior to Oct. 1, 1979, at datum 7.82 ft higher; prior to Nov. 15, 1971, nonrecording gage at same site and datum. 

REMARKS.-- Lake level regulated by concrete dam with two 12-foot gates and 20-foot lock at outlet. Gage-height telemeter at station.


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Additional Info: INFOS

Boating safety tips
This station managed by the USGS Wisconsin Water Science Center - Middleton WI.

Available Parameters Available Period
2007-10-01  2021-09-19
2018-09-20  2021-09-19


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Summary of all available data for this site
Instantaneous-data availability statement

Gage height, feet, [(4)]

Most recent instantaneous value: 9.96 09-19-2021   15:00 CDT
Graph of  Gage height, feet, [(4)]

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