Lake Tamarack Dam

Lake Tamarack Dam is an earth dam located in Sussex County, New Jersey, built in 1940. It carries a High hazard potential classification and has a satisfactory condition assessment.

About Lake Tamarack Dam

The primary purpose of Lake Tamarack Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Tamarack Association (private). It impounds the Franklin Pond Creek-tr.

The dam stands 10 feet tall and stretches 300 feet across, creates a reservoir covering 34 acres, has a storage capacity of 198 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/14/2023.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The New Jersey dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateNew Jersey
CountySussex
River/StreamFranklin Pond Creek-tr
Coordinates41.09607, -74.53697

Physical Characteristics

Dam TypeEarth
NID Height10 ft
Dam Height10 ft
Dam Length300 ft
Year Completed1940 (86 years old)

Storage & Hydraulics

NID Storage198 acre-ft
Normal Storage198 acre-ft
Surface Area34 acres
Drainage Area0 sq mi
Max Discharge8 cfs

Ownership & Safety

PurposeRecreation
OwnerLake Tamarack Association
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection09/14/2023
Emergency Action PlanYes

Identifiers

NID IDNJ00301
Federal IDNJ00301
More InfoState Dam Safety Program

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