Algonkin Dam is an earth dam located in Salem County, New Jersey, built in 1924. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 320 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Algonkin Dam
The primary purpose of Algonkin Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Bancroft Neurohealth (private). It impounds the Oldman's Creek near Upper Pittsgrove.
The dam stands 14 feet tall and stretches 320 feet across, creates a reservoir covering 10 acres, has a storage capacity of 93 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1924, 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 04/21/2022.
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Location
| State | New Jersey |
| County | Salem |
| Nearest City | Upper Pittsgrove |
| River/Stream | Oldman's Creek |
| Coordinates | 39.66398, -75.24287 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 320 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 93 acre-ft |
| Normal Storage | 93 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 468 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Bancroft Neurohealth |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/21/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00115 |
| Federal ID | NJ00115 |
| More Info | State Dam Safety Program |