Largest lakes & reservoirs in Great Lakes 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 3 articles we have published for Great Lakes Region, SD lakes.
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Below are lakes within USA > US Midwest Region > South Dakota > Great Lakes Region, SD > Compared by longest shoreline length in miles. This list does not represent all lakes in Great Lakes Region, SD, only the 3 Great Lakes Region, SD 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… |
| Lake Francis Case, SD (Great Lakes Region, SD, South Dakota, US Midwest Region, USA) |
540 mi | Lake Francis Case, one of the most popular recreation spots in the Great Plains, is located along the Missouri River in south-central South Dakota. La… |
| Lake Sharpe, SD (Great Lakes Region, SD, South Dakota, US Midwest Region, USA) |
200 mi | Lake Sharpe, located on South Dakota Highways 50 and 47 near Chamberlain, and Reliance, is one of the four reservoirs constructed along the Missouri R… |