Largest lakes & reservoirs in Southwest Region, ND 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 2 articles we have published for Southwest Region, ND lakes.
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Below are lakes within USA > US Midwest Region > North Dakota > Southwest Region, ND > Compared by longest shoreline length in miles. This list does not represent all lakes in Southwest Region, ND, only the 2 Southwest Region, ND lake articles we have published on the LakeLubbers website.
Lake name  |
Shoreline length in miles |
Lake description |
|---|---|---|
| Lake Oahe, ND/SD (Great Lakes Region, SD, North Dakota, South Central Region, ND, South Dakota, Southwest Region, ND, US Midwest Region, USA) |
2,250 mi | Lake Oahe, named after an Oahe Indian Mission, roughly translates “a foundation” or “a place to stand on.” Spanning 231 miles from Pierre, South Dakot… |
| Bowman Haley Lake, ND (North Dakota, Southwest Region, ND, US Midwest Region, USA) |
17 mi | Also known as Bowman-Haley Lake Bowman Haley Lake, located in Southwestern North Dakota, was once a Sioux hunting ground. Bowman Haley Lake is now a 1,740-acre lake surrounded by rol… |