Largest lakes & reservoirs in New Hampshire 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 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 water volume. 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  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Squam Lake, NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
243,670 ac-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) |
62,928 ac-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,… |
| Great East Lake, ME/NH (Lakes Region, NH, Maine, New Hampshire, Southern Coast Region, ME, US New England Region, USA) |
59,993 ac-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… |
| Merrymeeting Lake (Lakes Region, NH, New Hampshire, US New England Region, USA) |
55,208 ac-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 Waukewan (Lakes Region, NH, New Hampshire, US New England Region, USA) |
20,416 ac-ft | Lake Waukewan is set within the heart of New Hampshire’s Lakes Region, where its sparkling 928 acres lure visitors seeking to escape to a small town a… |
| Lake Monomonac (Central Massachusetts, Massachusetts, Monadnock Region, NH, New Hampshire, US New England Region, USA) |
12,844 ac-ft | The wind fills the sails, pushing the sailboats across Lake Monomonac. A bewitching combination of pristine white sail cloth and billowing bright colo… |
| Bow Lake (Lakes Region, NH, New Hampshire, US New England Region, USA) |
11,500 ac-ft | (Also known as Bow Lake) New Hampshire’s Bow Lake is located about 30 miles south of better-known Lake Winnipesaukee in the state’s Lakes Region. Bow Lake has its own special… |
| Franklin Pierce Lake, NH (Monadnock Region, NH, New Hampshire, US New England Region, USA) |
8,750 ac-ft | (Also known as Jackman Reservoir) Franklin Pierce Lake in New Hampshire’s Monadnock Region is a relatively unknown gem. Also known as Jackman Reservoir, the 520-acre lake sits on the o… |
| Stinson Lake (New Hampshire, US New England Region, USA, White Mountains Region, NH) |
7,000 ac-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… |
| Lake Kanasatka (Lakes Region, NH, New Hampshire, US New England Region, USA) |
5,640 ac-ft | (Also known as Long Pond, Red Hill Pond) Lake Kanasatka is a clear, 371-acre freshwater lake set among New Hampshire’s towering trees and surrounded by sloping hillsides. The lake was once na… |
| Silver Lake NH (Lakes Region, NH, New Hampshire, US New England Region, USA) |
5,500 ac-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… |
| Laurel Lake (Monadnock Region, NH, New Hampshire, US New England Region, USA) |
2,700 ac-ft | Laurel Lake, with its 180 acres of clear, sparkling waters and densely-wooded shoreline in Cheshire County, New Hampshire is a perfect spot for a peac… |