Largest lakes & reservoirs in Great Lakes Region, PA by water volume
The estimated volume of water that a lake contains is measured at the lake’s normal elevation. By this measure, the world’s largest freshwater lake is Siberia’s Lake Baikal.Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet. 1 acre-foot is equal to 325,851 US gallons. Siberia’s Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater – nearly 1 million gallons for every living person on earth.
The other – and more widely used – measure of a lake’s size is the lake’s surface acreage. By that measure, the world’s largest freshwater lake is North America’s Lake Superior.
Note: In the United States, an acre foot is a unit of volume used to refer to large-scale bodies of water. It is defined by the volume of water needed to cover 1 acre of surface area to a depth of 1 foot.
You can find many of the the world’s largest lakes (by water volume) on LakeLubbers. Note: For some lakes, the water volume data is unknown or does not apply, so you may see fewer lakes than the total 6 articles we have published for Great Lakes Region, PA lakes.
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Below are lakes within USA > US Mid-Atlantic Region > Pennsylvania > Great Lakes Region, PA > Compared by water volume. This list does not represent all lakes in Great Lakes Region, PA, only the 6 Great Lakes Region, PA lake articles we have published on the LakeLubbers website.
Lake name  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Lake Erie (Canada, Chautauqua-Allegheny Region, NY, Great Lakes Region, PA, Great Lakes of North America, Greater Niagara Region, NY, Michigan, New York, Northeast Ohio, Northwest Ohio, Ohio, Ontario, Canada, Pennsylvania, Southeast Michigan, US Mid-Atlantic Region, US Midwest Region, USA) |
391,987,200 ac-ft | Lake Erie, one of the Great Lakes of North America, straddles the borders of Ohio, Pennsylvania, New York, Michigan, and the Canadian province of Onta… |
| Pymatuning Lake, PA/OH (Great Lakes Region, PA, Northeast Ohio, Ohio, Pennsylvania, US Mid-Atlantic Region, US Midwest Region, USA) |
188,000 ac-ft | (Also known as Pymatuning Reservoir) Pymatuning Lake, located in northwestern Pennsylvania and spilling over into northeastern Ohio, is a lake of superlatives: Clocking in at 17,088 acres… |
| Shenango River Lake, PA/OH (Great Lakes Region, PA, Northeast Ohio, Ohio, Pennsylvania, US Mid-Atlantic Region, US Midwest Region, USA) |
29,920 ac-ft | (Also known as Shenango Reservoir) Located mostly in northwestern Pennsylvania between Greenville PA and Sharon PA – and spilling into northeastern Ohio – Shenango River Lake provides f… |
| Lake Wilhelm, PA (Great Lakes Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
17,825 ac-ft | 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… |
| Canadohta Lake, PA (Great Lakes Region, PA, Pennsylvania, US Mid-Atlantic Region, USA) |
3,138 ac-ft | Canadohta Lake is one of the largest natural lakes in Pennsylvania. Its tree-lined shores and spring-fed waters are located in the Keystone State’s Gr… |