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 266
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Silver Lake Dam Cumberland County | 12 | 1936 | Low | Poor |
| Silver Lake Dam Middlesex County | 31 | 1923 | Low | Satisfactory |
| Silver Lake Dam Sussex County | 11 | — | Low | Poor |
| Sheppards Mill Pond Dam Cumberland County | 18 | 1885 | Low | Satisfactory |
| Shepherd Lake Dam Passaic County | 18 | — | Low | Satisfactory |
| Shay Lake Dam Sussex County | 24 | — | Low | Satisfactory |
| Scenic Lake Dam Sussex County | 35 | — | Low | Poor |
| Sawmill Pond Dam Sussex County | 15 | — | Low | Poor |
| Round Valley P&F Dike Hunterdon County | 68 | — | Low | Not Rated |
| Riverton Basin Dam Middlesex County | 11 | — | Low | Not Rated |
| Rambaut Dam Bergen County | 11 | 1908 | Low | Poor |
| Quick Pond Dam Sussex County | 15 | — | Low | Not Rated |
| Poricy Dam Monmouth County | 8 | — | Low | Not Rated |
| Porches Mill Dam Gloucester County | 20 | 1923 | Low | Unsatisfactory |
| Pompton Dam Passaic County | 22 | — | Low | Fair |
| Pine Mill Lake Dam Burlington County | 18 | — | Low | Poor |
| Pickerel Pond Dam Ocean County | 7 | — | Low | Not Available |
| Perona Lake #2 Dam Sussex County | 10 | — | Low | Not Rated |
| Perona Lake #1 Dam Sussex County | 17 | 1929 | Low | Not Rated |
| Peapack-Gladstone Res Dam Morris County | 26 | — | Low | Poor |
| Patcong Lake Dam Atlantic County | 14 | 1984 | Low | Satisfactory |
| Pancoast Mill Pond Dam Atlantic County | 11 | — | Low | Poor |
| Pachoango Dam Burlington County | 12 | — | Low | Satisfactory |
| Oxycocus East Dike #1 Ocean County | 12 | 1880 | Low | Not Rated |
| Overpeck Tidal Dam Bergen County | 18 | 1950 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.