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Lakes / New Hampshire / Coos County / Basin Brook Reservoir

Basin Brook Reservoir, New Hampshire

39.54 acres
Surface Area

Where It Sits, and How Deep It Goes

Locator - New Hampshire

ConcordPortsmouthBasin Brook ReservoirCoos Co.

44.27 degrees N, 71.02 degrees W - Coos County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.

How Basin Brook Reservoir Stacks Up

Lakes Nearby

LakeCountyDistanceSurface Area
Mountain PondCarroll7.4 mi83.27 acres
Reflection PondCoos9.9 mi56.34 acres
Upper Kimball PondCarroll13 mi168.53 acres
Jericho LakeCoos20 mi126.54 acres
Head PondCoos20 mi89.7 acres
Success PondCoos21 mi281.95 acres

Straight-line distance between lake centers.

Facts and Figures

Waterbody ID129965429
CountyCoos
Coordinates44.2710, -71.0238

Questions About Basin Brook Reservoir

How Big Is Basin Brook Reservoir?

Basin Brook Reservoir covers 39.54 acres in Coos County, New Hampshire.

What Is the Largest Lake in Coos County?

Umbagog Lake is the largest lake in Coos County, at 7,642.5 acres.

Largest Lakes in New Hampshire

#LakeCountySurface AreaMax Depth
1Lake WinnipesaukeeBelknap45,654.45 acres-
2Umbagog LakeCoos7,642.5 acres-
3Squam LakeBelknap6,791.2 acres-
4Newfound LakeGrafton4,451.11 acres-
5Lake WinnisquamBelknap4,213.89 acres-

All 516 New Hampshire lakes ranked by surface area

Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 129965429). Verified October 30, 2026.