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 776–800 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Waddill Lake Dam Ocean County | 13 | 1963 | Significant | Poor |
| Wadsworth Lake Dam Gloucester County | 20 | 1926 | High | Poor |
| Wagush Levee Dam Burlington County | 8 | — | High | Fair |
| Wallkill Lake Dam Sussex County | 15 | 1930 | Low | Fair |
| Warren Mill Dam Hunterdon County | 38 | 1916 | High | Poor |
| Warrington Mill Dam Gloucester County | 20 | — | Low | Unsatisfactory |
| Washington Forge Pond Dam Morris County | 10 | 1890 | Significant | Satisfactory |
| Washington Lake South Dam Bergen County | 10 | 1980 | Significant | Satisfactory |
| Washington Lake West Dam Bergen County | 10 | 1980 | Significant | Satisfactory |
| Watchung Lake Dam Somerset County | 19 | — | High | Satisfactory |
| Watchung Square Dam Somerset County | 10 | — | Significant | Satisfactory |
| Watson'S Lake Dam Camden County | 15 | — | Significant | Poor |
| Wawayanda Lake Dam Sussex County | 14 | — | High | Fair |
| Weasel Brook Park Dam Passaic County | 6 | — | Significant | Satisfactory |
| Weavers Pond Dam Passaic County | 8 | — | Low | Not Rated |
| Wedgwood Country Club Dam Gloucester County | 11 | — | Significant | Satisfactory |
| Wells Mill Reservoir Dam Ocean County | 9 | — | Low | Satisfactory |
| West Branch Reservoir Dam Somerset County | 39 | 1930 | High | Poor |
| West Creek Dam Cape May County | 10 | — | Significant | Fair |
| West Milford Lake Dam Passaic County | 16 | 1929 | High | Poor |
| Weston Mill Pond Dam Middlesex County | 16 | 1916 | Significant | Fair |
| Westons Arch Dam Middlesex County | 17 | 1919 | Significant | Fair |
| West Shore Trail Dam Sussex County | — | — | High | Poor |
| Westville-Almonesson Dam Gloucester County | 17 | — | Significant | Satisfactory |
| Wetland Area I-2 Dam Monmouth County | 9 | 1990 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.