Largest lakes & reservoirs in Idaho by shoreline length
The length of the exterior shoreline around a lake is measured at the lake’s normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal. A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.When known, the shoreline miles that we report in our statistics include only the lake’s exterior shoreline, and exclude the shorelines of islands located within a lake’s boundaries. In lakes with many islands, those islands’ combined shorelines may exceed a lake’s exterior shoreline.
You can find many of the world’s longest-shoreline lakes on LakeLubbers. Note: For some lakes, "Longest Shorelines" data is unknown or does not apply, so this table may display fewer lakes than the total 23 articles we have published for Idaho lakes.
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Below are lakes within USA > US West Region > Idaho > Compared by longest shoreline length in miles. This list does not represent all lakes in Idaho, only the 23 Idaho lake articles we have published on the LakeLubbers website.
Lake name | Shoreline length in miles | Lake description |
---|---|---|
Lucky Peak Lake (Idaho, Southwestern Idaho, US West Region, USA) |
45 mi | Also known as Lucky Peak Reservoir Home of Idaho’s most visited state park, Lucky Peak Lake (sometimes called Lucky Peak Reservoir) covers over 3,000 acres just outside of the capital c … |
Hayden Lake, ID (Idaho, Northern Idaho, US West Region, USA) |
40 mi | Hayden Lake is located in the scenic panhandle of North Idaho in Kootenai County. With its sparkling water, pristine sandy beaches and timbered shorel … |
Magic Reservoir (Central Idaho, Idaho, US West Region, USA) |
25 mi | There is magic to be found in central Idaho: Magic Reservoir! This expanse of water was created in 1909 when the Big Wood River was dammed to provide … |
Payette Lake, ID (Idaho, Southwestern Idaho, US West Region, USA) |
21 mi | Also known as Big Payette Lake One hundred miles north of Boise, nearly surrounded by Payette National Forest, lies breathtaking Payette Lake. Nestled beneath the peaks of the West … |
Henrys Lake (Eastern Idaho, Idaho, US West Region, USA) |
14 mi | 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 … |
Cocolalla Lake (Idaho, Northern Idaho, US West Region, USA) |
10 mi | Cocolalla Lake, located in Idaho’s Northern Region, is an example of the recreational opportunities the Panhandle has to offer. The 805-acre lake is l … |
Williams Lake ID (Central Idaho, Idaho, US West Region, USA) |
4 mi | The swish and pop of a fly rod breaks the early morning silence on Williams Lake in the central region of Idaho. A heron wades in the reeds along the … |