Wallkill Lake Dam is an earth dam located in Sussex County, New Jersey, built in 1930. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 15 ft15 ft tall and 490 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 Wallkill Lake Dam
The primary purpose of Wallkill Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Wallkill Community,inc. (private). It impounds the Wallkill River-tr.
The dam stands 15 feet tall and stretches 490 feet across, creates a reservoir covering 26 acres, has a maximum storage capacity of 215 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 10/05/2018.
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Location
| State | New Jersey |
| County | Sussex |
| River/Stream | Wallkill River-tr |
| Coordinates | 41.23813, -74.53787 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 490 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 215 acre-ft |
| Max Storage | 215 acre-ft |
| Normal Storage | 156 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 900 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Wallkill Community,inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/05/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NJ00032 |
| Federal ID | NJ00032 |
| More Info | State Dam Safety Program |