Newest reservoirs in Wisconsin
The year that a reservoir was first filled to the reservoir’s normal elevation – or the year that a natural lake was first dammed – is the determining factor in the age of the body of water. A large reservoir can take more than a year to fill after its dam is first closed. You can find many of the the world’s newest reservoirs on LakeLubbers in the comparison table below. Many of the world’s oldest reservoirs appear on the last page of that list. Note: For some lakes, the completion year data is unknown, so you may see fewer lakes than the total 128 articles we have published for Wisconsin lakes.Thinking about booking a Wisconsin lake vacation home rental, cabin or hotel?
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Below are lakes within USA > US Midwest Region > Wisconsin > Compared by newest (youngest) reservoirs and the year it was completed. This list does not represent all lakes in Wisconsin, only the 128 Wisconsin lake articles we have published on the LakeLubbers website.
Lake name  |
Completion year |
Lake description |
|---|---|---|
| Balsam Lake, WI (Lake Superior Northwoods Region, WI, US Midwest Region, USA, Wisconsin) |
1860 | Polk County in Northwest Wisconsin is described as a “Gift of the Glaciers.” The phrase certainly applies to Balsam Lake and the town that bears its n … |
| Lake Winnebago, WI (Central Sands Prairie Region, WI, US Midwest Region, USA, Wisconsin) |
1850 | American white pelicans skim across the surface of Lake Winnebago, fishing alongside the anglers below. Birds and fishermen alike flock to the beautif … |
| Lake Mendota, WI (Southern Savanna Region, WI, US Midwest Region, USA, Wisconsin) |
1847 | Also known as Yahara Chain of Lakes Sometimes called the “City of 4 Lakes,” Madison in Dane County is the capital of Wisconsin and its second largest city. Its “Lake, City, Lake” tradema … |
| Rush Lake, WI (Central Sands Prairie Region, WI, US Midwest Region, USA, Wisconsin) |
1847 | Rush Lake is a conservation success story in the making and a testament to what can happen when diverse groups are willing to put aside their differen … |
| Lake Koshkonong, WI (Southern Savanna Region, WI, US Midwest Region, USA, Wisconsin) |
1846 | Sprawled across southern Wisconsin, just a few miles down the Rock River from Fort Atkinson, Lake Koshkonong is a fantastic place to boat and fish. Th … |
| Fox Lake, WI (Southern Savanna Region, WI, US Midwest Region, USA, Wisconsin) |
1845 | The Winnebago Indians, the area’s first inhabitants called it Hosh-a-rac-ah-tah or “good land.” Later it was known as “Waushara” or “fish spear,” and … |
| Beaver Dam Lake, WI (Southern Savanna Region, WI, US Midwest Region, USA, Wisconsin) |
1842 | Surrounded by south-central Wisconsin farmland, Beaver Dam Lake on the Beaver Dam River is a beautiful rural getaway. Conveniently located 40 miles no … |
| Pewaukee Lake, WI (Southern Savanna Region, WI, US Midwest Region, USA, Wisconsin) |
1838 | Named from the Potawatomi word “Pee-wauk-ee-wee-nick” for “lake of shells,” Pewaukee Lake is a beautiful spring-fed lake. Just 20 miles from Milwaukee … |