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 76–100 of 266
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Oliphants Mill Lake Dam Burlington County | 11 | — | Low | Satisfactory |
| Old Forge Lake Dam Burlington County | 12 | — | Low | Satisfactory |
| Oakford Lake Dam Ocean County | 8 | 1929 | Low | Fair |
| Nj No Name No. 118 Dam Salem County | 8 | — | Low | Not Rated |
| Nishisakawick Creek Dam Hunterdon County | 23 | 1930 | Low | Fair |
| New Jersey No Name # 9 Dam Salem County | 12 | — | Low | Not Rated |
| New Jersey No Name # 8 Dam Burlington County | 8 | — | Low | Satisfactory |
| New Jersey No Name # 88 Dam Burlington County | 20 | — | Low | Not Rated |
| New Jersey No Name # 87 Dam Burlington County | 15 | — | Low | Not Rated |
| New Jersey No Name # 85 Dam Burlington County | 15 | 1950 | Low | Not Rated |
| New Jersey No Name # 84 Dam Burlington County | 15 | — | Low | Satisfactory |
| New Jersey No Name # 82 Dam Monmouth County | 10 | — | Low | Not Rated |
| New Jersey No Name # 71 Dam Morris County | 12 | 1901 | Low | Fair |
| New Jersey No Name # 64 Dam Sussex County | 13 | — | Low | Not Rated |
| New Jersey No Name # 58 Dam Sussex County | 18 | — | Low | Not Rated |
| New Jersey No Name # 57 Dam Monmouth County | 17 | — | Low | Poor |
| New Jersey No Name # 56 Dam Morris County | 7 | 1960 | Low | Satisfactory |
| New Jersey No Name # 50 Dam Warren County | 30 | — | Low | Not Rated |
| New Jersey No Name # 3 Dam Gloucester County | 25 | — | Low | Not Rated |
| New Jersey No Name # 23 Dam Ocean County | 8 | — | Low | Not Rated |
| New Jersey No Name # 21 Dam Camden County | 7 | 1940 | Low | Poor |
| New Jersey No Name # 17 Dam Burlington County | 10 | — | Low | Not Rated |
| New Jersey No Name # 15 Dam Sussex County | 14 | 1955 | Low | Not Rated |
| New Jersey No Name # 14 Dam Sussex County | 25 | — | Low | Not Rated |
| New Jersey No Name # 110 Dam Monmouth County | 12 | — | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.