Porches Mill Dam
Porches Mill Dam is an earth dam located in Gloucester County, New Jersey, built in 1923. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.
About Porches Mill Dam
The primary purpose of Porches Mill Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by James Hargrave (private). It impounds the Oldmans Creek-tr.
The dam stands 20 feet tall and stretches 350 feet across, creates a reservoir covering 18 acres, has a storage capacity of 76 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1923, the structure is over a century 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 08/08/2020.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Jersey |
| County | Gloucester |
| River/Stream | Oldmans Creek-tr |
| Coordinates | 39.70010, -75.33188 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 350 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Normal Storage | 76 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 800 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | James Hargrave |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 08/08/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NJ00113 |
| Federal ID | NJ00113 |
| More Info | State Dam Safety Program |