New Jersey Dams
830 dams tracked by the National Inventory of Dams
Total Dams
830
High Hazard
232
28%
Poor / Unsatisfactory
233
Average Age
95 yrs
Hazard Classification
High232 (28.0%)
Significant332 (40.0%)
Low266 (32.0%)
Condition Assessment
Satisfactory373 (44.9%)
Fair112 (13.5%)
Poor / Unsatisfactory233 (28.1%)
Not Rated112 (13.5%)
Federal
21
State
126
Local
287
Private
393
Tallest Dams
- Merrill Creek Main Dam280 ft
- Round Valley South Dam178 ft
- Monksville Dam150 ft
- Round Valley North Dam135 ft
- Boonton Dam120 ft
High Hazard Dams
Poor Condition Dams
All Dams in New Jersey
Showing 26–50 of 112
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Crystal Lake Dam Bergen County | 14 | 1960 | Significant | Fair |
| Dalrymple Pond Dam Morris County | 16 | — | Low | Fair |
| Darlington Lake Dam Bergen County | 19 | 1951 | Significant | Fair |
| Davidsons Mill Pond Dam Middlesex County | 10 | 1950 | Significant | Fair |
| Deer Head Lake Dam Ocean County | 9 | — | High | Fair |
| Diamond Lake Dam Gloucester County | 11 | — | Low | Fair |
| Double Trouble North Dam Ocean County | 10 | — | Low | Fair |
| East Cove Dam Sussex County | 15 | — | High | Fair |
| East Creek Pond Dam Cape May County | 11 | 1800 | Significant | Fair |
| Echo Lake Intake Dam Passaic County | 32 | 1926 | High | Fair |
| Echo Lake Spillway Dam Passaic County | 22 | 1926 | High | Fair |
| Egg Harbor City Park Dam Atlantic County | 9 | — | Low | Fair |
| Erskine Upper Lake Dam Passaic County | 20 | 1932 | High | Fair |
| Farrington Dam Middlesex County | 34 | 1926 | High | Fair |
| Franklin Pond Dam Sussex County | 18 | — | Significant | Fair |
| Glen Wild Lake Dam Passaic County | 21 | 1918 | Significant | Fair |
| Green Turtle Pond Dam Passaic County | 35 | — | High | Fair |
| Grenloch Lake Dam Gloucester County | 21 | 1907 | Significant | Fair |
| Grover'S Mill Dam Mercer County | 15 | 1931 | Significant | Fair |
| Hackensack Res. # 2 (Weehawken) Dam Hudson County | — | — | High | Fair |
| Hands Mill Dam Cumberland County | 10 | — | Significant | Fair |
| Hanks Pond Dam Passaic County | 14 | 1900 | Significant | Fair |
| Henion Pond Dam Passaic County | 10 | 1926 | Significant | Fair |
| Holiday Lake Dam Ocean County | 16 | 1965 | Low | Fair |
| Indian Mills Dam Burlington County | 11 | 1807 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.