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 426–450 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Panorama Dike Sussex County | 15 | 1987 | High | Poor |
| Lake Panorama Dam Sussex County | 20 | 1957 | Significant | Poor |
| Lake Owassa Dam Sussex County | 10 | — | Low | Not Rated |
| Lake Oberst Dam Gloucester County | 9 | — | Significant | Poor |
| Lake Neepaulin Dam Sussex County | 22 | 1927 | Significant | Satisfactory |
| Lake Musconetcong Dam Morris County | 14 | 1933 | High | Satisfactory |
| Lake Morski Oko Dam Morris County | 12 | 1953 | Low | Satisfactory |
| Lake Mohawk Dam Sussex County | 20 | 1927 | High | Satisfactory |
| Lake Marcia Dam Sussex County | 15 | — | Low | Not Rated |
| Lake Louise Dam Monmouth County | 14 | — | High | Satisfactory |
| Lake Lenore Dam Morris County | 12 | — | Low | Poor |
| Lake Lenape Dam Atlantic County | 29 | 1879 | High | Poor |
| Lake Lenape Dam Sussex County | 27 | 1931 | High | Satisfactory |
| Lake Lefferts Dam Monmouth County | 16 | 1928 | High | Poor |
| Lakeland Dam Camden County | 14 | 1929 | Significant | Poor |
| Lake Lackawanna Dam Sussex County | 15 | 1910 | Significant | Fair |
| Lake Kathryn South Dam Sussex County | 10 | — | Low | Not Rated |
| Lake Kathryn Dam Sussex County | 12 | 1926 | Low | Satisfactory |
| Lake Kalmia Dam Warren County | 8 | 1936 | Low | Poor |
| Lake Juliet Dam Morris County | 12 | 1919 | Significant | Poor |
| Lake James Dam Burlington County | 11 | 1990 | Significant | Fair |
| Lake Horicon Dam Ocean County | 7 | 1942 | Low | Not Rated |
| Lake Hopatcong Dam Morris County | 17 | 1925 | High | Poor |
| Lake Hackney Dam Gloucester County | 11 | — | Significant | Poor |
| Lake Grinnell Dam Sussex County | 12 | 1900 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.