Boston Felt is a masonry dam located in Strafford County, New Hampshire, built in 1983. It carries a Low hazard potential classification and has a satisfactory condition assessment.

Hazard potentialLowFailure would cause limited damage
ConditionSatisfactoryBest of 4 ratings
Emergency action planNot reported
Last inspection07/31/2019
Height10 ft
Built198343 years ago

Dam profile

NID height · 10 ft
10 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

10 ft tall and 150 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.

About Boston Felt

The primary purpose of Boston Felt 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 Salmon Falls Power & Light Company, LLC (private). It impounds the Salmon Falls River near East Rochester.

The dam stands 10 feet tall and stretches 150 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 232 acre-feet, and collects water from a drainage area of 140 square miles. Completed in 1983, the structure is 43 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/31/2019.

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Location

StateNew Hampshire
CountyStrafford
Nearest CityEast Rochester
River/StreamSalmon Falls River
Coordinates43.33737, -70.93621

Physical Characteristics

Dam TypeMasonry
NID Height10 ft
Dam Height10 ft
Dam Length150 ft
Year Completed1983 (43 years old)

Storage & Hydraulics

NID Storage232 acre-ft
Max Storage232 acre-ft
Normal Storage232 acre-ft
Surface Area5 acres
Drainage Area140 sq mi
Max Discharge10,500 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerSalmon Falls Power & Light Company, LLC
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection07/31/2019
Emergency Action PlanNot Required

Identifiers

NID IDNH00443
Federal IDNH00443
More InfoState Dam Safety Program