Turtle Pond Dam

Turtle Pond Dam is an earth dam located in Merrimack County, New Hampshire, built in 1932. It carries a Low hazard potential classification and has a poor condition assessment.

About Turtle Pond Dam

The primary purpose of Turtle Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City Of Concord (local government). It impounds the Tr Mill Brook near Concord.

The dam stands 8 feet tall and stretches 125 feet across, creates a reservoir covering 159 acres, has a maximum storage capacity of 864 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1932, 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 09/29/2017.

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Low HazardPoor ConditionEmergency Action Plan: Not Required

Location

StateNew Hampshire
CountyMerrimack
Nearest CityConcord
River/StreamTr Mill Brook
Coordinates43.24750, -71.51550

Physical Characteristics

Dam TypeEarth
NID Height8 ft
Dam Height8 ft
Dam Length125 ft
Year Completed1932 (94 years old)

Storage & Hydraulics

NID Storage864 acre-ft
Max Storage864 acre-ft
Normal Storage201 acre-ft
Surface Area159 acres
Drainage Area4 sq mi
Max Discharge427 cfs

Ownership & Safety

PurposeRecreation
OwnerCITY OF CONCORD
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentPoor
Last Inspection09/29/2017
Emergency Action PlanNot Required

Identifiers

NID IDNH00364
Federal IDNH00364
More InfoState Dam Safety Program

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