Newest reservoirs in Idaho
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 23 articles we have published for Idaho lakes.Thinking about booking a Idaho lake vacation home rental, cabin or hotel?
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Below are lakes within USA > US West Region > Idaho > Compared by newest (youngest) reservoirs and the year it was completed. This list does not represent all lakes in Idaho, only the 23 Idaho lake articles we have published on the LakeLubbers website.
Lake name ![]() |
Completion year ![]() |
Lake description |
---|---|---|
Henrys Lake (Eastern Idaho, Idaho, US West Region, USA) |
1923 | Also known as Henry's Lake Reservoir Hidden in the far north corner of Eastern Idaho, just over the border from both Montana and Wyoming, Henrys Lake attracts thousands of visitors every … |
Coeur d’Alene Lake, ID (Idaho, Northern Idaho, US West Region, USA) |
1906 | Also known as Lake Coeur d'Alene Nestled at the foothills of the Rocky Mountains in the Northern Panhandle of Idaho, 30,000-acre Coeur d’Alene Lake (pronounced Core-de-lane) is a spec … |