Coon Brook Bog Dam

Coon Brook Bog Dam is a concrete dam located in Coos County, New Hampshire, built in 1947. It carries a Low hazard potential classification and has a poor condition assessment.

About Coon Brook Bog Dam

The primary purpose of Coon Brook Bog Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nh Fish And Game Department (state). It impounds the Coon Brook near Pittsburg.

The dam stands 10 feet tall and stretches 330 feet across, creates a reservoir covering 43 acres, has a maximum storage capacity of 230 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1947, the structure is well-established, with more than 75 years of service.

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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/16/2022.

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Low HazardPoor ConditionEmergency Action Plan: Not Required

Location

StateNew Hampshire
CountyCoos
Nearest CityPittsburg
River/StreamCoon Brook
Coordinates45.14160, -71.25000

Physical Characteristics

Dam TypeConcrete
NID Height10 ft
Dam Height10 ft
Dam Length330 ft
Year Completed1947 (79 years old)

Storage & Hydraulics

NID Storage230 acre-ft
Max Storage230 acre-ft
Normal Storage90 acre-ft
Surface Area43 acres
Drainage Area1 sq mi

Ownership & Safety

PurposeRecreation
OwnerNH FISH AND GAME DEPARTMENT
Owner TypeState
Hazard ClassificationLow
Condition AssessmentPoor
Last Inspection06/16/2022
Emergency Action PlanNot Required

Identifiers

NID IDNH00568
Federal IDNH00568
More InfoState Dam Safety Program

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