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 251–275 of 373
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Pachoango Dam Burlington County | 12 | — | Low | Satisfactory |
| Panther Valley Village # 6 Dam Warren County | 23 | — | Significant | Satisfactory |
| Parsippany Dike Morris County | 30 | 1905 | High | Satisfactory |
| Patcong Lake Dam Atlantic County | 14 | 1984 | Low | Satisfactory |
| Paulinskill Lake Dam Sussex County | 29 | 1927 | Significant | Satisfactory |
| Paulins Kill Site 4 Dam Sussex County | 24 | 1961 | High | Satisfactory |
| Paulinskill Water Shed #2 Dam Sussex County | 29 | 1959 | High | Satisfactory |
| Peddie Lake Dam Mercer County | 15 | 1923 | High | Satisfactory |
| Pine Lake Park Dam Ocean County | 16 | 1931 | Significant | Satisfactory |
| Pines Lake Dam Passaic County | 42 | 1927 | High | Satisfactory |
| Plainsboro Pond Dam Middlesex County | 11 | — | Significant | Satisfactory |
| Pleasant Valley Lake Dam Morris County | 35 | 1933 | High | Satisfactory |
| 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 |
| Preakness Hills C.C. Dam No. 1 Passaic County | 15 | — | High | Satisfactory |
| Princeton Walk Dam Middlesex County | 16 | 1988 | Significant | Satisfactory |
| Quinton Pond Dam Salem County | 9 | — | Significant | Satisfactory |
| Rainbow Dam Ocean County | 13 | 1938 | High | Satisfactory |
| 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 |
| Regional Detention Basin Dam E Somerset County | 17 | — | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.