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 226–250 of 332
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Elmer Lake Dam Salem County | 12 | — | Significant | Poor |
| Ellsworth (Detention Pond) Dam Somerset County | 9 | — | Significant | Satisfactory |
| Eden Mill Dam Morris County | 12 | — | Significant | Poor |
| Echo Lake Upper Dam Union County | 17 | 1922 | Significant | Satisfactory |
| Echo Lake Dam Union County | 20 | 1930 | Significant | Satisfactory |
| East Lake Dam Salem County | 11 | — | Significant | Poor |
| East Highland Lake Dam Sussex County | 15 | 1947 | Significant | Satisfactory |
| East Creek Pond Dam Cape May County | 11 | 1800 | Significant | Fair |
| Duhernal Dam Middlesex County | 13 | 1939 | Significant | Poor |
| Doughty Pond Dam Atlantic County | 18 | 1914 | Significant | Satisfactory |
| Diamond Mill Pond Dam Essex County | 9 | 1937 | Significant | Satisfactory |
| Derrygally Pond Dam Morris County | 8 | — | Significant | Satisfactory |
| Deer Trail Lake Dam Sussex County | 28 | — | Significant | Satisfactory |
| Deer Park Pond Dam Warren County | 19 | — | Significant | Satisfactory |
| Decozen'S Dam Morris County | 11 | 1954 | Significant | Satisfactory |
| Davis Mill Dam Cumberland County | 18 | 1938 | Significant | Poor |
| Davidsons Mill Pond Dam Middlesex County | 10 | 1950 | Significant | Fair |
| Darlington Lake Dam Bergen County | 19 | 1951 | Significant | Fair |
| Daretown Lake Dam Salem County | 16 | 1915 | Significant | Satisfactory |
| Cumberland Pond Dam Cumberland County | 12 | 1929 | Significant | Poor |
| Cub Lake Dam Sussex County | 20 | — | Significant | Satisfactory |
| Crystal Lake Dam Burlington County | 13 | 1919 | Significant | Satisfactory |
| Crystal Lake Dam Bergen County | 14 | 1960 | Significant | Fair |
| Cranes Lake Dam Gloucester County | 10 | 1972 | Significant | Poor |
| Cranberry Lakes Dam #5 Burlington County | 11 | — | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.