Deepest lakes & reservoirs in New Hampshire by maximum depth (ft)
The estimated greatest depth of the water in a lake can be measured at the lake’s normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake’s average depth can be calculated:Water volume ÷ Surface Area = Average Depth
Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth.
You can find many of the the world’s deepest lakes on LakeLubbers. If you sort the list, you will find the (maximum depth of) the shallowest lakes in our database. Note: For some lakes, lake depth data is unknown, so this table may display 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 maximum depth in feet. 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  |
Max depth in feet |
Lake description |
|---|---|---|
| Newfound Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
183 ft | Comfortably situated in New Hampshire’s famous Lakes Region, Newfound Lake is the third-largest lake located entirely within the state’s boundaries. I… |
| Lake Winnipesaukee, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
180 ft | 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… |
| Winnisquam Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
174 ft | 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… |
| Silver Lake NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
164 ft | Silver Lake is located in eastern New Hampshire’s Lakes tourism region, just south of the White Mountain National Forest. The lake spans almost 1,000… |
| First Connecticut Lake, NH (Great North Woods Region, NH, New Hampshire, US New England Region, USA) |
163 ft | New Hampshire’s Connecticut Lakes, located in the state’s Great North Woods region, are comprised of four lakes: First Connecticut Lake, Second Connec… |
| Merrymeeting Lake (Lakes Region, NH, New Hampshire, US New England Region, USA) |
135 ft | 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… |
| Lake Sunapee, NH (Dartmouth-Lake Sunapee Region, NH, New Hampshire, US New England Region, USA) |
104 ft | 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… |
| Great East Lake, ME/NH (Lakes Region, NH, Maine, New Hampshire, Southern Coast Region, ME, US New England Region, USA) |
102 ft | 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… |
| Squam Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
98 ft | 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… |
| Lake Wentworth (Lakes Region, NH, New Hampshire, US New England Region, USA) |
89 ft | 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,… |
| Stinson Lake (New Hampshire, US New England Region, USA, White Mountains Region, NH) |
77 ft | Stinson Lake, which once housed the laughter of summer camp children, now shines as a quiet residential retreat in central New Hampshire. A refreshing… |
| Umbagog Lake, ME/NH (Great North Woods Region, NH, Lakes & Mountains Region, ME, Maine, New Hampshire, US New England Region, USA) |
75 ft | 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… |