Largest lakes & reservoirs in Maryland by acres
There is no widely-accepted minimum surface area that defines a lake. What LakeLubbers describes as a lake, you might call a pond. Acreage of a lake (or sometimes square kilometers) is most often measured at the top surface area when the lake is at normal elevation. The surface area can be considerably smaller or larger when lake levels are lower or higher than normal. North America’s Lake Superior is the world’s largest freshwater lake by this measure.The other measure of a lake’s size is the lake’s water volume. By that measure, the world’s largest freshwater lake is Lake Baikal in Siberia.
You can find many of the world’s largest lakes (acres) on LakeLubbers in the comparison table below. Note: For some lakes, "Largest Lakes - Acres" data is unknown or does not apply, so you may see fewer lakes than the total 8 articles we have published for Maryland lakes.
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Below are lakes within USA > US Mid-Atlantic Region > Maryland > Compared by surface area in acres. This list does not represent all lakes in Maryland, only the 8 Maryland lake articles we have published on the LakeLubbers website.
Lake name  |
Surface area in acres |
Lake description |
|---|---|---|
| Deep Creek Lake, MD (Maryland, US Mid-Atlantic Region, USA, Western Maryland) |
3,900 ac | Deep Creek Lake is the largest inland body of water in Maryland, covering about 3,900 acres in the Allegheny Mountains of western Maryland. Since its… |
| Liberty Reservoir, MD (Central Maryland, Maryland, US Mid-Atlantic Region, USA) |
3,113 ac | Also known as Liberty Lake Liberty Reservoir, also known as Liberty Lake, is located in the Patapsco region of the Chesapeake Bay watershed within Maryland’s Baltimore suburbs.… |
| Loch Raven Reservoir, MD (Central Maryland, Maryland, US Mid-Atlantic Region, USA) |
2,400 ac | The Loch Raven Reservoir is located just a few miles north of Baltimore. Unspoiled and surrounded by forests and hiking trails, it has long provided M… |
| Prettyboy Reservoir, MD (Central Maryland, Maryland, US Mid-Atlantic Region, USA) |
1,500 ac | Prettyboy Reservoir spreads out over 1,500 acres in northern Baltimore County, Maryland. It is named after Prettyboy Creek, which is a located in a se… |
| Jennings Randolph Lake, MD/WV (Maryland, Potomac Highlands Region, WV, US Mid-Atlantic Region, US South Region, USA, West Virginia, Western Maryland) |
952 ac | Also known as Jennings Randolph Reservoir, Bloomington Lake Jennings Randolph Lake is nestled in a scenic valley along the North Branch Potomac River. This portion of the Potomac creates the county and state bo… |
| Little Seneca Lake, MD (Capital Region, MD, Maryland, US Mid-Atlantic Region, USA) |
505 ac | Little Seneca Lake, located near Boyds, Maryland, is the focal point of the Black Hill Regional Park and covers nearly 1/3 of its acreage. It lies in… |
| Savage River Reservoir, MD (Maryland, US Mid-Atlantic Region, USA, Western Maryland) |
360 ac | Fresh, crystal clear mountain water makes Savage River Reservoir a beautiful destination in northwestern Maryland. Located in a canyon of the Savage R… |
| Lake Needwood & Lake Frank (Capital Region, MD, Maryland, US Mid-Atlantic Region, USA) |
54 ac | Also known as Needwood Reservoir, Lake Bernard Frank, Bernard Frank Reservoir Lake Needwood and its little neighbor, Lake Bernard Frank, offer a quiet respite from the busy, noisy metropolitan Washington DC landscape. The little… |