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 151–175 of 232
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Peddie Lake Dam Mercer County | 15 | 1923 | High | Satisfactory |
| Picatinny Lake Morris County | 15 | 1904 | High | Fair |
| Pinecliff Lake Dam Passaic County | 15 | 1927 | High | Fair |
| Pines Lake Dam Passaic County | 42 | 1927 | High | Satisfactory |
| Pleasant Valley Lake Dam Morris County | 35 | 1933 | High | Satisfactory |
| Pleasant Valley Lake Dam Sussex County | 31 | — | High | Poor |
| Pocahontas Dam Morris County | 11 | 1920 | High | Satisfactory |
| Pohatcong Lake Dam Ocean County | 9 | 1931 | High | Satisfactory |
| Point View Dam Passaic County | 55 | 1964 | High | Satisfactory |
| Pompton Lakes Dam Passaic County | 30 | 1908 | High | Satisfactory |
| Post Brook Dam Passaic County | 15 | 1923 | High | Satisfactory |
| Powder Mill Pond Dam Morris County | 35 | — | High | Poor |
| Preakness Hills C.C. Dam No. 1 Passaic County | 15 | — | High | Satisfactory |
| Prospertown Dam Ocean County | 19 | 1966 | High | Poor |
| Rainbow Dam Ocean County | 13 | 1938 | High | Satisfactory |
| Rainbow Lakes Dam Morris County | 11 | — | High | Fair |
| Ramapo Lake Dam Bergen County | 13 | — | High | Poor |
| Ravine Lake Dam Somerset County | 45 | 1899 | High | Satisfactory |
| Raymond Dam Passaic County | 103 | 1928 | High | Satisfactory |
| Regency Monroe Pond Dam Middlesex County | 14 | — | High | Satisfactory |
| Reservoir Lake Dam Sussex County | 12 | — | High | Satisfactory |
| River Wall Dam Passaic County | 26 | 1961 | High | Poor |
| Robert Rooke Dam Sussex County | 23 | 1963 | High | Satisfactory |
| Robinson'S Branch Reservoir Dam Union County | 27 | 1907 | High | Satisfactory |
| Round Valley Dike Hunterdon County | 80 | 1961 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.