USGS 05428000 Lake Mendota at Madison, WI
- Latitude 43°05'42", Longitude 89°22'12", in Dane County boat house at dam at outlet, in Madison.
- Water-stage recorder. Datum of gage is 840.00 ft above sea level (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.