Lake Wisconsin

Infobox lake
lake_name = Lake Wisconsin
image_lake = Aerial view of the Prairie du Sac Dam during the 2008 flood.jpg
caption_lake = Prairie du Sac Dam, which impounds Lake Wisconsin, during the June 2008 flood
image_bathymetry =
caption_bathymetry =
location = Wisconsin
coords = coord|43|23|46.54|N|89|34|43.93|W|type:waterbody_region:US-WI|display=inline,title
type = reservoir
inflow = Wisconsin River
outflow = Wisconsin River
catchment =
basin_countries = United States
length =
width =
area = 9500 acres (38 km²)
depth =
max-depth = 40 ft (12 m)
volume =
residence_time =
shore =
elevation = about convert|774|ft|abbr=on|lk=on
islands =
cities =

Lake Wisconsin is a reservoir on the Wisconsin River in southern Wisconsin in the United States. It is located in Columbia and Sauk counties, approximately 5 mi (8 km) southeast of Baraboo and 25 mi (40 km) NNW of Madison.

It was formed by the construction of a dam at Prairie du Sac, which was begun in 1915 and completed in 1924. It is part of the Wisconsin River system of reservoirs. The lake has a maximum depth of 40 ft (12 m). It has a shoreline of 57 mi (90 km) and an area of 9500 acres (38 km²).

Its construction effectively ended the Fox-Wisconsin Waterway connection to the Mississippi River, although commercial traffic had ended decades before completion of the dam.

The lake provides flood control and is a popular destination for recreational boating and fishing.

The Merrimac Ferry crosses the lake at Merrimac, Wisconsin.

External links

* [http://www.lakewisconsin.org/ LakeWisconsin.org]
* [http://www.lakewisconsinresort.com Lake Wisconsin Resort]