Eden Mill Dam
Eden Mill Dam is a concrete dam located in Morris County, New Jersey. It carries a Significant hazard potential classification and has a poor condition assessment.
About Eden Mill Dam
The primary purpose of Eden Mill 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 River Park Business Center, Llc (private). It impounds the Whippany River.
The dam stands 12 feet tall and stretches 178 feet across, creates a reservoir covering 13 acres, has a storage capacity of 43 acre-feet, and collects water from a drainage area of 31 square miles.
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 06/09/2020.
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Location
| State | New Jersey |
| County | Morris |
| River/Stream | Whippany River |
| Coordinates | 40.82055, -74.43192 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 178 ft |
Storage & Hydraulics
| NID Storage | 43 acre-ft |
| Normal Storage | 43 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 31 sq mi |
| Max Discharge | 129 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | River Park Business Center, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/09/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00791 |
| Federal ID | NJ00791 |
| More Info | State Dam Safety Program |