Blackwater Dam - Little Hill Dike

Merrimack County, New Hampshire (near WEBSTER)

River/Stream: BLACKWATER RIVER

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Gravity
Height
38 ft
Dam Length
1,425 ft
Reservoir Storage
93,400 acre-ft
Year Completed
1941
Primary Purpose
Flood Risk Reduction
Owner Type
Federal
Max Discharge
42,800 cfs

Condition Assessment

Not AvailableLast inspected: 2022-10-25

Hazard Classification: High — This describes the potential consequences of dam failure, not the likelihood of failure.

Condition Assessment: Not Available — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
NH03848
State
New Hampshire (NH)
Coordinates
43.34152, -71.76800
Age
85 years

Nearby Dams

External Resources

Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.