|LAKE MONONA WATER LEVELS|
About Lake Monona
Lake Monona has a surface area of 3,274 acres and a maximum depth of 64'. The depth around Belleisle is much lower. Until dredging was done in 2013, some sections of Lagoon du Nord had a summer depth of less than 18"!
The historic high water level of 847.86' AMSL was set on June 16, 2008. Prior to that date, the record was 847.48 on June 15, 2000 with several other notable high-water events. Water levels can be somewhat regulated via the Babcock Park Dam. Dane County attempts to keep water levels in the summer between 844.7' and 845.2' and above 842.2' in the winter.
The average Winter freeze date for Lake Monona occurs on December 15th. The earliest freeze was recorded on 11/22/1880 while the latest was on 01/30/1932. The average thaw (break up) date for Lake Monona occurs on March 31st. the earliest thaw occured on 02/27/1998 while the latest occured on 05/04/1857.
Recent Water Periods