Lake Level Data

Please see the slow-no-wake page for information and updates regarding slow-no-wake requirements.

Temporary Kegonsa Dam Water Levels Order Amendment effective April 2, 2009 (1.3 MB PDF)
Lake Level Management on the Yahara Chain of Lakes (7.3 MB PDF)

Lake Locations and Current and Target Lake Levels

Mendota     [Lake Info] 2/9/2010 Target min Target max 100-Year* 848.4 848.20 N/A 852   Monona     [Lake Info] 2/9/2010 Target min Target max 100-Year* 844.7 842.20 N/A 848 Waubesa     [Lake Info] 2/9/2010 Target min Target max 100-Year* 844.2 842.00 N/A 847 Kegonsa     [Lake Info] 2/9/2010 Target min Target max 100-Year* 842.52 841.85 N/A 845

Readings are updated daily from the United States Geological Survey (USGS) and are expressed in feet above sea level. For additional information, see the USGS web site Real-Time Data for Wisconsin: Yahara River and Lakes or the Wisconsin Department of Natural Resources booklet Understanding Lake Data.

To view more lake level readings, check out our Lake Level Search Page.

* 100-Year Flood Elevation: the 100-year flood elevation establishes the extent of the 100-year floodplain. The 100-year floodplain is the area that has a 1% probability of flooding every year, and where predicted flood water elevations above mean sea level have been established. Properties in the floodplain are considered to be at high risk of flooding under the National Flood Insurance Program (NFIP). Construction in these areas must meet local floodplain zoning ordinance requirements, including evidence that principle structures are above the 100-year flood elevation as shown on the adopted floodplain maps.

Questions or comments about the lake level readings
or this website may be sent to:
lwrd@co.dane.wi.us