Stephens Lake Dam is an earth dam located in Passaic County, New Jersey. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 12 ft12 ft tall and 100 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 Stephens Lake Dam
The primary purpose of Stephens Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mountain Lake Estates, Inc. (private). It impounds the High Mountain Brook.
The dam stands 12 feet tall and stretches 100 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 43 acre-feet, and collects water from a drainage area of 1 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 01/15/2020.
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Location
| State | New Jersey |
| County | Passaic |
| River/Stream | High Mountain Brook |
| Coordinates | 41.05617, -74.26717 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 100 ft |
Storage & Hydraulics
| NID Storage | 43 acre-ft |
| Max Storage | 43 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mountain Lake Estates, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 01/15/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00903 |
| Federal ID | NJ00903 |
| More Info | State Dam Safety Program |