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 176200 of 300

Dam NameHeight (ft)YearHazardCondition
Mountain Pond Dam

Hillsborough County

131930LowFair
Mountain Pond North Dam

Belknap County

141913LowFair
Mountain Pond South Dam

Belknap County

71913LowFair
Mud Pond Dam

Coos County

101920LowFair
Mud Pond Dam

Cheshire County

181899LowFair
Nashua Canal Dam and Dike

Hillsborough County

111886LowSatisfactory
New Pond Dam

Merrimack County

131885LowNot Rated
Nippo Pond Dam

Strafford County

91930LowFair
North River Pond Dam

Rockingham County

81932LowFair
North Village Dam

Hillsborough County

121836LowFair
Nottingham Lake Dam

Rockingham County

14LowSatisfactory
Onway Lake Dam

Rockingham County

91915LowPoor
Osgood Pond Dam

Hillsborough County

91861LowFair
Ossipee Lake Dam Berry Bay

Carroll County

121919LowFair
Ossipee Lake Dam Headworks Dam

Carroll County

121919LowPoor
Otter Brook Dam

Hillsborough County

101928LowFair
Otter Pond Dam

Sullivan County

121920LowSatisfactory
Paper Mill

Hillsborough County

91922LowSatisfactory
Pawtuckaway Lake/ Drowns Dike

Rockingham County

121842LowPoor
Pearley Terrill Dam

Coos County

141965LowNot Rated
Pearl Lake Dam

Grafton County

101930LowPoor
Pearly Pond Dam

Cheshire County

71935LowFair
Pembroke

Merrimack County

261891LowSatisfactory
Penacook Lower Falls Diversion

Merrimack County

151982LowSatisfactory
Penacook Upper Falls

Merrimack County

231987LowSatisfactory
PreviousPage 8 of 12Next

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