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 51–75 of 112
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lower Mount Glen Lake Dam Passaic County | 15 | 1927 | High | Fair |
| Lily Lake Dam Atlantic County | 9 | 1910 | Low | Fair |
| Levine Reservoir Dam Passaic County | 10 | — | Significant | Fair |
| Lake Topanemus Dam Monmouth County | 20 | 1915 | High | Fair |
| Lake Shenandoah Dam Ocean County | 17 | 1934 | Significant | Fair |
| Lake Pine Dam Burlington County | 14 | 1941 | Significant | Fair |
| Lake Lackawanna Dam Sussex County | 15 | 1910 | Significant | Fair |
| Lake James Dam Burlington County | 11 | 1990 | Significant | Fair |
| Lake Cushetunk Dam Hunterdon County | 20 | 1928 | Significant | Fair |
| Lake Carasaljo Dam Ocean County | 16 | 1870 | High | Fair |
| K-L-P Dam Salem County | 20 | 1963 | Significant | Fair |
| Kettle Run Dam Burlington County | 14 | 1885 | Low | Fair |
| Indian Mills Dam Burlington County | 11 | 1807 | Significant | Fair |
| Holiday Lake Dam Ocean County | 16 | 1965 | Low | Fair |
| Henion Pond Dam Passaic County | 10 | 1926 | Significant | Fair |
| Hanks Pond Dam Passaic County | 14 | 1900 | Significant | Fair |
| Hands Mill Dam Cumberland County | 10 | — | Significant | Fair |
| Hackensack Res. # 2 (Weehawken) Dam Hudson County | — | — | High | Fair |
| Grover'S Mill Dam Mercer County | 15 | 1931 | Significant | Fair |
| Grenloch Lake Dam Gloucester County | 21 | 1907 | Significant | Fair |
| Green Turtle Pond Dam Passaic County | 35 | — | High | Fair |
| Glen Wild Lake Dam Passaic County | 21 | 1918 | Significant | Fair |
| Franklin Pond Dam Sussex County | 18 | — | Significant | Fair |
| Farrington Dam Middlesex County | 34 | 1926 | High | Fair |
| Erskine Upper Lake Dam Passaic County | 20 | 1932 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.