Franklin Falls Hydro Dam 2

Franklin Falls Hydro Dam 2 is a concrete dam located in Merrimack County, New Hampshire, built in 1888. It carries a Significant hazard potential classification.

About Franklin Falls Hydro Dam 2

The primary purpose of Franklin Falls Hydro Dam 2 is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Franklin Falls Hydro Corp (private). It impounds the Winnipesaukee River near Franklin.

The dam stands 20 feet tall and stretches 150 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 45 acre-feet, and collects water from a drainage area of 457 square miles. Completed in 1888, the structure is over a century old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 05/24/2018.

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Significant HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateNew Hampshire
CountyMerrimack
Nearest CityFranklin
River/StreamWinnipesaukee River
Coordinates43.44270, -71.64940

Physical Characteristics

Dam TypeConcrete
NID Height20 ft
Dam Height20 ft
Dam Length150 ft
Year Completed1888 (138 years old)

Storage & Hydraulics

NID Storage45 acre-ft
Max Storage45 acre-ft
Normal Storage10 acre-ft
Surface Area1 acres
Drainage Area457 sq mi
Max Discharge2,000 cfs

Ownership & Safety

PurposeHydroelectric
OwnerFRANKLIN FALLS HYDRO CORP
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection05/24/2018
Emergency Action PlanNot Required

Identifiers

NID IDNH83025
Federal IDNH83025
More InfoState Dam Safety Program

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