What is Lake Marion (South Carolina)?
{{Infobox lake | lake_name = Lake Marion | image_lake = Lake marion moultrie map.jpg | caption_lake = Lake Marion (top) and [[Lake Moultrie]] (bottom right) from space | image_bathymetry = | caption_bathymetry = | location = [[Clarendon County, South Carolina|Clarendon]] / [[Orangeburg County, South Carolina|Orangeburg]] / [[Berkeley County, South Carolina|Berkeley]] / [[Calhoun County, South Carolina|Calhoun]] / [[Sumter County, South Carolina|Sumter]] counties, [[South Carolina|South Carolina, US]] | coords = {{Coord|33|27|14|N|80|09|50|W|region:US-SC_type:waterbody|display=inline,title}} | type = [[reservoir]] | inflow = | outflow = | catchment = | basin_countries = United States | length = | width = | area = {{convert|110000|acre|abbr=on}} | depth = | max-depth = | volume = | residence_time = | shore = | elevation = | islands = | cities = }} '''Lake Marion''' is the largest [[lake]] in [[South Carolina]]. It is centrally located. Parts of it are in five different counties. The lake is referred to as South Carolina's inland sea. It has a {{convert|315|mi|abbr=off|adj=on}} shoreline. It covers almost 110,000 acres (450 square kilometers or 173.7 square miles) of rolling farmlands, former marshes, and river valley landscape.<ref>{{Cite web|title=SC Lakes and Waterways - Lake Marion|url=https://www.dnr.sc.gov/lakes/marion/description.html|access-date=2022-03-14|website=www.dnr.sc.gov}}</ref> The [[Santee River]] was dammed in the 1940s to supply [[hydroelectric]] power. This was part of the rural electrification efforts initiated under President [[Franklin D. Roosevelt]]'s [[New Deal]] during the [[Great Depression]]. It is one of the fifty largest lakes in the [[United States]], whether natural or man-made reservoirs. It covers only about a third of the area of the fifteenth largest in size. Visitors can travel from Lake Marion through the Diversion [[Canal]] to Lake Moultrie. At the end of Lake Moultrie lies the 75-foot high Pinopolis Lock which will lower boaters down to