Water Supply Dams in New Hampshire

New Hampshire has 38 water supply dams, of which 23 carry a high hazard classification. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area.

#	Dam	County	Height (ft)	Hazard	Condition	Year
1	Whitewater Brook Dam	Sullivan	95	High	Fair	1968
2	Arlington Mills Res Wheeler Dam	Rockingham	54	High	Satisfactory	1922
3	Rice Reservoir Dam	Sullivan	48	High	Satisfactory	1935
4	Dole Reservoir Dam	Sullivan	43	High	Fair	1913
5	Babbidge Reservoir Dam	Cheshire	38	High	Satisfactory	1931
6	Harris Pond Dam	Hillsborough	35	High	Satisfactory	1861
7	Tower Hill Pond Dam	Rockingham	35	High	Satisfactory	1938
8	Bellamy Reservoir Dam	Strafford	35	High	Satisfactory	1962
9	Lower Reservoir Dam	Grafton	33	High	Fair	1893
10	Goffstown Upper Reservoir Dam	Hillsborough	31	High	Poor	1934
11	Arlington Mill Res Evergreen Dike	Rockingham	31	Significant	Fair	1922
12	Upper Reservoir Dam	Grafton	30	High	Fair	1924
13	Hanover Center Reservoir Dam	Grafton	30	High	Satisfactory	1962
14	Goffstown Lower Reservoir Dam	Hillsborough	30	High	Fair	1906
15	Massabesic Lake Dam	Hillsborough	30	High	Satisfactory	1873
16	Supply Pond Dam	Hillsborough	28	High	Fair	1854
17	Rochester Reservoir Dam	Strafford	26	High	Satisfactory	1935
18	Bowers Dam	Hillsborough	25	High	Poor	1884
19	Woodward Pond Dam	Cheshire	22	High	Satisfactory	1836
20	Oyster Reservoir Dam	Strafford	21	Significant	Fair	1934
21	Walpole Reservoir Dam	Cheshire	20	High	Poor	1901
22	Cohas Avenue Dam	Hillsborough	20	Low	Satisfactory	1874
23	Godfrey Dam	Coos	18	Significant	Satisfactory	1920
24	Icy Gulch Reservoir Dam	Coos	18	Significant	Satisfactory	1940
25	Berry Pond Dam	Merrimack	18	High	Satisfactory	1884
26	Lebanon Water Treatment Intake Dam	Grafton	16	Significant	Satisfactory	1934
27	Gordon Hill Water Supply Dam	Belknap	15	Significant	Satisfactory	1934
28	Exeter Reservoir Dam	Rockingham	15	High	Poor	1886
29	Mountain Pond North Dam	Belknap	14	Low	Fair	1913
30	Holt Pond Dam	Hillsborough	13	Low	Satisfactory	1890
31	Dole Reservoir Dike	Sullivan	11	Significant	Fair	1913
32	Mud Pond Dam	Coos	10	Low	Fair	1920
33	Arlington Mills Res West Dike	Rockingham	10	Low	Satisfactory	1922
34	Penacook Lake Dam	Merrimack	9	High	Poor	1873
35	Bear Pond Dam	Merrimack	8	Low	Satisfactory	1932
36	Clark Pond East Dam	Rockingham	8	Low	Fair	1811
37	Mountain Pond South Dam	Belknap	7	Low	Fair	1913
38	Rochester Reservoir Dike Spillway	Strafford	2	High	Satisfactory	1935

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