Largest lakes & reservoirs in Southeast Region, SD 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 Southeast Region, SD lakes.
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Below are lakes within USA > US Midwest Region > South Dakota > Southeast Region, SD > Compared by longest shoreline length in miles. This list does not represent all lakes in Southeast Region, SD, only the 2 Southeast Region, SD lake articles we have published on the LakeLubbers website.
Lake name  |
Shoreline length in miles |
Lake description |
|---|---|---|
| Lewis and Clark Lake, NE/SD (Lewis and Clark Region, NE, Nebraska, South Dakota, Southeast Region, SD, US Midwest Region, USA) |
90 mi | Stretching 25 miles long and straddling the Nebraska and South Dakota border, 28,000-acre Lewis and Clark Lake is the smallest of the Missouri River r… |
| Marindahl Lake, SD (South Dakota, Southeast Region, SD, US Midwest Region, USA) |
4 mi | Also known as Marindahl Reservoir Marindahl Lake, in South Dakotas’s Southeast Region, isn’t the kind of lake you’ll find on lists of the world’s greatest lakes. Indeed, you may not be… |