Largest lakes & reservoirs in New Hampshire 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 40 articles we have published for New Hampshire lakes.
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Below are lakes within USA > US New England Region > New Hampshire > Compared by surface area in acres. This list does not represent all lakes in New Hampshire, only the 40 New Hampshire lake articles we have published on the LakeLubbers website.
Lake name  |
Surface area in acres |
Lake description |
|---|---|---|
| Lake Winnipesaukee, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
44,586 ac | By far the largest lake in the state, Lake Winnipesaukee covers an incredible 44,586 New Hampshire acres. The lake is the third largest lake in all of… |
| Umbagog Lake, ME/NH (Great North Woods Region, NH, Lakes & Mountains Region, ME, Maine, New Hampshire, US New England Region, USA) |
7,850 ac | Also known as Rangeley Lakes Umbagog Lake straddles about 11 miles of the Maine-New Hampshire border. This 7,850-acre lake lies partly in the Rangeley Lakes region of western Main… |
| Squam Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
6,791 ac | Also known as Big Squam Lake, Little Squam Lake Big Squam Lake,the second-largest lake located entirely in New Hampshire, covers almost 6,800 acres in the state’s Lakes Region. Dotted with historic… |
| Newfound Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
4,451 ac | Comfortably situated in New Hampshire’s famous Lakes Region, Newfound Lake is the third-largest lake located entirely within the state’s boundaries. I… |
| Winnisquam Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
4,264 ac | Also known as Lake Winnisqam Located in New Hampshire’s “Lakes Region”, Winnisquam Lake holds the distinction of being the fourth-largest lake located completely within the NH sta… |
| Lake Sunapee, NH (Dartmouth-Lake Sunapee Region, NH, New Hampshire, US New England Region, USA) |
4,090 ac | Also known as Sunapee Lake Lake Sunapee has been a popular vacation destination since the heyday of passenger railroads and steamships. The lake’s clear waters and beautiful sce… |
| Ossipee Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
3,245 ac | Ossipee Lake covers an impressive 3,245 acres in the Lakes Region of New Hampshire, making it the sixth-largest lake contained entirely within the sta… |
| Lake Wentworth (Lakes Region, NH, New Hampshire, US New England Region, USA) |
3,116 ac | One of the prettiest lakes in New Hampshire’s Lakes Region is Lake Wentworth. All too often overlooked as tourists flock to nearby Lake Winnipesaukee,… |
| First Connecticut Lake, NH (Great North Woods Region, NH, New Hampshire, US New England Region, USA) |
3,071 ac | New Hampshire’s Connecticut Lakes, located in the state’s Great North Woods region, are comprised of four lakes: First Connecticut Lake, Second Connec… |
| Great East Lake, ME/NH (Lakes Region, NH, Maine, New Hampshire, Southern Coast Region, ME, US New England Region, USA) |
1,768 ac | Great East Lake is a paradise for anyone who enjoys a relaxing time. With over 1700 acres of water and 12 miles of shoreline, Great East Lake is known… |
| Conway Lake (New Hampshire, US New England Region, USA, White Mountains Region, NH) |
1,316 ac | Conway Lake is a hidden treasure nestled in the towns of Conway and Eaton, east of the White Mountains in New Hampshire. Careful conservation efforts… |
| Merrymeeting Lake (Lakes Region, NH, New Hampshire, US New England Region, USA) |
1,233 ac | Beautiful Merrymeeting Lake in the town of New Durham, New Hampshire was formed by an impoundment on the Merrymeeting River in 1923. At normal water l… |