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 125 of 162

Dam NameHeight (ft)YearHazardCondition
Ws Packaging Canal Dam

Hillsborough County

151876HighSatisfactory
Woodward Pond Dam

Cheshire County

221836HighSatisfactory
Wolfeboro Sewage Lagoon Dam

Carroll County

451975HighFair
Wilder

Grafton County

591950HighSatisfactory
Whitewater Brook Dam

Sullivan County

951968HighFair
Whites Pond Dam and Dike

Merrimack County

151890HighSatisfactory
Webster Lake Dam

Merrimack County

141873HighSatisfactory
Weare Reservoir Dam

Hillsborough County

341913HighPoor
Warren Lake Dam

Cheshire County

131771HighPoor
Walpole Reservoir Dam

Cheshire County

201901HighPoor
Verney Mill Hydro Dam

Hillsborough County

251916HighNot Rated
Upper Wilson Pond Dam

Cheshire County

171910HighPoor
Upper Reservoir Dam

Grafton County

301924HighFair
Upper Kimball Pond Dam

Carroll County

101800HighPoor
Uncanoonuc Lake Dike

Hillsborough County

151954HighFair
Uncanoonuc Lake Dam

Hillsborough County

101936HighSatisfactory
Turkey Pond Dam

Merrimack County

151958HighSatisfactory
Tower Hill Pond Dam

Rockingham County

351938HighSatisfactory
Three Mile Reservoir Dam

Cheshire County

201986HighSatisfactory
Taylor River Pond Dam

Rockingham County

191949HighSatisfactory
Swains Lake Dam

Strafford County

171890HighSatisfactory
Surry Mountain Dam

Cheshire County

831941HighNot Available
Supply Pond Dam

Hillsborough County

281854HighFair
Sunset Lake Dam

Belknap County

171860HighPoor
Sunrise Lake Dam

Strafford County

191877HighSatisfactory
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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.