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 601–625 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Englishtown Lake Dam Monmouth County | 13 | 1959 | Significant | Poor |
| Emma Lake Dam Morris County | 10 | — | Low | Poor |
| Emilio Perona Dam Sussex County | 23 | — | Low | Not Rated |
| Elmer Lake Dam Salem County | 12 | — | Significant | Poor |
| Ellsworth (Detention Pond) Dam Somerset County | 9 | — | Significant | Satisfactory |
| Elk Lake Dam Cumberland County | 10 | — | Low | Not Rated |
| Elkinton Pond Dam Salem County | 20 | 1923 | High | Poor |
| Egg Harbor City Park Dam Atlantic County | 9 | — | Low | Fair |
| Eden Mill Dam Morris County | 12 | — | Significant | Poor |
| Echo Lake Upper Dam Union County | 17 | 1922 | Significant | Satisfactory |
| Echo Lake Spillway Dam Passaic County | 22 | 1926 | High | Fair |
| Echo Lake Intake Dam Passaic County | 32 | 1926 | High | Fair |
| Echo Lake Dam Union County | 20 | 1930 | Significant | Satisfactory |
| Echo Lake Dam Monmouth County | 8 | — | High | Satisfactory |
| East Lake Dam Cumberland County | 17 | — | High | Satisfactory |
| East Lake Dam Salem County | 11 | — | Significant | Poor |
| East Highland Lake Dam Sussex County | 15 | 1947 | Significant | Satisfactory |
| East Creek Pond Dam Cape May County | 11 | 1800 | Significant | Fair |
| East Cove Dam Sussex County | 15 | — | High | Fair |
| East Branch Reservoir Dam Somerset County | 33 | 1905 | High | Satisfactory |
| Durham Pond Dam Morris County | 11 | — | Low | Poor |
| Dundee Passaic County | 16 | 1854 | Low | Satisfactory |
| Duhernal Dam Middlesex County | 13 | 1939 | Significant | Poor |
| Doughty Pond Dam Atlantic County | 18 | 1914 | Significant | Satisfactory |
| Double Trouble North Dam Ocean County | 10 | — | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.