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 351–373 of 373
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Watchung Lake Dam Somerset County | 19 | — | High | Satisfactory |
| Watchung Square Dam Somerset County | 10 | — | Significant | Satisfactory |
| Weasel Brook Park Dam Passaic County | 6 | — | Significant | Satisfactory |
| Wedgwood Country Club Dam Gloucester County | 11 | — | Significant | Satisfactory |
| Wells Mill Reservoir Dam Ocean County | 9 | — | Low | Satisfactory |
| Westville-Almonesson Dam Gloucester County | 17 | — | Significant | Satisfactory |
| Wetland Area I-2 Dam Monmouth County | 9 | 1990 | Low | Satisfactory |
| White Meadow Lake Dam Morris County | 15 | — | High | Satisfactory |
| Wildwood Dike Morris County | 8 | — | Low | Satisfactory |
| Wildwood Lake Dam Morris County | 13 | — | High | Satisfactory |
| Willow Crest Dam Sussex County | 17 | 1965 | High | Satisfactory |
| Wilson Lake Dam Gloucester County | 6 | 1933 | Significant | Satisfactory |
| Wolf Den Dam Passaic County | 42 | 1927 | High | Satisfactory |
| Woodbury Creek Dam Gloucester County | 6 | 1961 | Significant | Satisfactory |
| Woodcliff Lake Dam Bergen County | 38 | 1906 | High | Satisfactory |
| Woolman Lake Dam Burlington County | 5 | — | Significant | Satisfactory |
| Yards Creek Auxiliary Reservoir Dam Warren County | 22 | 1965 | Low | Satisfactory |
| Yards Creek Lower - Auxiliary Dike Warren County | 35 | 1965 | High | Satisfactory |
| Yards Creek Lower - Main Dam Warren County | 55 | 1965 | High | Satisfactory |
| Yards Creek Upper - East Dike Warren County | 21 | 1965 | High | Satisfactory |
| Yards Creek Upper - Main Dam Warren County | 70 | 1965 | High | Satisfactory |
| Yards Creek Upper - S. W. Dike Warren County | 25 | 1965 | High | Satisfactory |
| Yards Creek Upper - West Dike Warren County | 52 | 1965 | High | Satisfactory |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.