Mine Hill Reservoir Dam
Mine Hill Reservoir Dam is a concrete dam located in Morris County, New Jersey, built in 1896. It carries a Significant hazard potential classification and has a poor condition assessment.
About Mine Hill Reservoir Dam
The primary purpose of Mine Hill Reservoir Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Ironbound Real Estate Holdings, Llc (private). It impounds the Mine Brook near Hackettstown.
The dam stands 30 feet tall and stretches 310 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1896, 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 03/28/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Jersey |
| County | Morris |
| Nearest City | Hackettstown |
| River/Stream | Mine Brook |
| Coordinates | 40.85650, -74.79498 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 310 ft |
| Year Completed | 1896 (130 years old) |
Storage & Hydraulics
| NID Storage | 35 acre-ft |
| Max Storage | 35 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 46 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Ironbound Real Estate Holdings, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 03/28/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00777 |
| Federal ID | NJ00777 |
| More Info | State Dam Safety Program |