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 626–650 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Don Bosco Dam Sussex County | 25 | 1962 | Low | Satisfactory |
| Donald R. Wheeler (Surprise Lake) Dam Morris County | 22 | 1909 | High | Satisfactory |
| Dogwood Dam Burlington County | 13 | 1952 | Low | Not Available |
| Dixons Pond Dam Morris County | 10 | — | Low | Poor |
| Diversion Dam Sussex County | 8 | 1959 | High | Poor |
| Diamond Mill Pond Dam Essex County | 9 | 1937 | Significant | Satisfactory |
| Diamond Lake Dam Gloucester County | 11 | — | Low | Fair |
| Devoe Lake Dam Middlesex County | 15 | 1935 | High | Satisfactory |
| Derrygally Pond Dam Morris County | 8 | — | Significant | Satisfactory |
| Delaware Lake Dam Warren County | 21 | — | Low | Poor |
| Deer Trail Lake Dam Sussex County | 28 | — | Significant | Satisfactory |
| Deer Pond Dam Morris County | 17 | 1930 | Low | Satisfactory |
| Deer Park Pond Dam Warren County | 19 | — | Significant | Satisfactory |
| Deer Lake Dam Sussex County | 14 | — | Low | Satisfactory |
| Deer Head Lake Dam Ocean County | 9 | — | High | Fair |
| Deep Run Dam Middlesex County | 10 | 1988 | Low | Satisfactory |
| Decozen'S Dam Morris County | 11 | 1954 | Significant | Satisfactory |
| Deal Lake Dam Monmouth County | 11 | — | Low | Not Rated |
| Dawns Dam Monmouth County | 20 | 1950 | Low | 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 |
| Dalrymple Pond Dam Morris County | 16 | — | Low | Fair |
| Cushman Lake Dam Atlantic County | 17 | — | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.