Largest lakes & reservoirs in Pennsylvania 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 40 articles we have published for Pennsylvania lakes.
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Below are lakes within USA > US Mid-Atlantic Region > Pennsylvania > Compared by longest shoreline length in miles. This list does not represent all lakes in Pennsylvania, only the 40 Pennsylvania lake articles we have published on the LakeLubbers website.
Lake name | Shoreline length in miles | Lake description |
---|---|---|
Lake Wilhelm, PA (Great Lakes Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
12 mi | Lake Wilhelm was created in 1971 with the damming of Sandy Creek for flood control purposes. Lake Wilhelm is a shallow lake with a maximum depth of ab … |
Pinchot Lake (Pennsylvania, Pennsylvania Dutch Country Region, US Mid-Atlantic Region, USA) |
8 mi | Also known as Pinchot Reservoir, Gifford Pinchot State Park, Old Conewago Lake Only 20 miles south of Harrisburg, in Pennsylvania Dutch Country, 340-acre Pinchot Lake forms a recreational oasis. The reservoir was built in 1959 to … |
Harveys Lake, PA (Northeastern Mountains Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
8 mi | Also known as Harvey's Lake With a surface area of 658 acres, Harveys Lake is Pennsylvania’s largest natural lake by total volume of water. Located in the Northeastern Mountain R … |
Lake Naomi, PA (Northeastern Mountains Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
7 mi | Lake Naomi, located in the Pocono Mountains of northeastern Pennsylvania, offers residents and visitors alike four seasons of recreation. During every … |
Lake Redman & Lake Williams (Pennsylvania, Pennsylvania Dutch Country Region, US Mid-Atlantic Region, USA) |
6 mi | Also known as Redman Reservoir, Williams Reservoir Two reservoirs in quick succession in Pennsylvania Dutch Country, Lake Redman and Lake Williams provide tons of fun and outdoor recreation to resident … |
Beaverdam Reservoir (Allegheny Mountains & Valleys Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
6 mi | Also known as Beaverdam Run Reservoir Tucked away in rural Cambria County, in Pennsylvania’s Allegheny Mountains and Valleys region, Beaverdam Reservoir provides a welcome natural respite … |
Treasure Lake (Pennsylvania, Pennsylvania Wilds Region, US Mid-Atlantic Region, USA) |
6 mi | Also known as Lake Rene The Pennsylvania Wilds Region is not a place you would expect to find a lake called Treasure Lake. Neither would you expect Bimini Lake or Trinidad Be … |
Lake Ariel, PA (Northeastern Mountains Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
5 mi | For over 150 years people have been making their way to the Pocono Mountains of northeastern Pennsylvania to enjoy the beautiful waters of Lake Ariel. … |
Lake Heritage (Pennsylvania, Pennsylvania Dutch Country Region, US Mid-Atlantic Region, USA) |
5 mi | One of Pennsylvania Dutch Country’s best residential neighborhoods is Lake Heritage, a gated community built around the shores of a 154-acre, private … |
Lake Henry (Northeastern Mountains Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
4 mi | Also known as Maplewood Lake, Blueberry Lake Located in Pennsylvania’s Northeast Mountains, Lake Henry is one of the better-kept secrets of the Poconos. At 310 acres, the lake is known by at leas … |
Twin Lakes, PA (Northeastern Mountains Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
4 mi | Nestled on the edge of the Poconos, the Twin Lakes are pristine glacial lakes tucked away in the land that inspired the birth of the US Forest Service … |
Pinecrest Lake, PA (Northeastern Mountains Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
3 mi | Nestled in the beautiful Pocono Mountains of Pennsylvania, Pinecrest Lake is a first class private community complete with a championship golf course, … |