New Hampshire Dams

664 dams tracked by the National Inventory of Dams

Total Dams

664

High Hazard

162

24.4%

Poor / Unsatisfactory

152

Average Age

100 yrs

Hazard Classification

High162 (24.4%)
Significant185 (27.9%)
Low300 (45.2%)

Condition Assessment

Satisfactory267 (40.2%)
Fair169 (25.5%)
Poor / Unsatisfactory152 (22.9%)
Not Rated76 (11.4%)

Federal

22

State

170

Local

195

Private

261

All Dams in New Hampshire

Showing 526550 of 664

Dam NameHeight (ft)YearHazardCondition
Shop Pond Dam

Rockingham County

131930SignificantSatisfactory
Silica Pond Dam

Cheshire County

91930SignificantPoor
Silver Lake Dam

Cheshire County

121924LowSatisfactory
Silver Lake Dam

Carroll County

81926LowFair
Silver Lake Dam

Hillsborough County

81930LowSatisfactory
Skating Pond Dam

Rockingham County

81974UndeterminedNot Rated
Skatutakee Lake Dam

Cheshire County

131778SignificantSatisfactory
Smith Pond Dam

Grafton County

121830HighFair
Socha Dam

Rockingham County

81930LowPoor
Somersworth

Strafford County

171929SignificantSatisfactory
Souhegan River Site 10a Dam

Hillsborough County

591966HighSatisfactory
Souhegan River Site 12a North Dike

Hillsborough County

391965HighFair
Souhegan River Site 12a South Dam

Hillsborough County

381965HighFair
Souhegan River Site 13 Dam

Hillsborough County

141964LowSatisfactory
Souhegan River Site 15 Dam

Hillsborough County

131963SignificantFair
Souhegan River Site 19 Dam

Hillsborough County

361962HighFair
Souhegan River Site 25b Dam

Hillsborough County

741967HighFair
Souhegan River Site 26 Dam

Hillsborough County

791965HighFair
Souhegan River Site 28 Dam

Hillsborough County

291964HighSatisfactory
Souhegan River Site 33 Dam

Hillsborough County

211971HighFair
Souhegan River Site 35 Dam

Hillsborough County

301965HighFair
Souhegan Site 14 Dam

Hillsborough County

281836HighFair
Souhegan Site 8 Cemetery Dike

Hillsborough County

161977LowSatisfactory
Souhegan Site 8 Dam

Hillsborough County

251977HighSatisfactory
Souhegan Site 8 South Dike

Hillsborough County

91977LowSatisfactory
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.