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 451–475 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Gilman Dam Gloucester County | 14 | 1928 | High | Satisfactory |
| Lake Gerard Dike C Sussex County | 12 | — | High | Satisfactory |
| Lake Gerard Dike B Sussex County | 15 | — | High | Satisfactory |
| Lake Gerard Dam A Sussex County | 16 | 1930 | High | Satisfactory |
| Lake Gerard Dam Sussex County | 10 | 1930 | High | Satisfactory |
| Lake George Dam Atlantic County | 12 | 1959 | Low | Poor |
| Lake Garrison Dam Gloucester County | 7 | 1924 | Significant | Poor |
| Lake Estling Dam Morris County | 19 | 1870 | High | Poor |
| Lake Erskine Dam Passaic County | 10 | 1930 | Significant | Satisfactory |
| Lake Denmark Morris County | 12 | 1904 | High | Poor |
| Lake Cushetunk Dam Hunterdon County | 20 | 1928 | Significant | Fair |
| Lake Conway Dam Sussex County | 21 | 1958 | High | Poor |
| Lake Carasaljo Dam Ocean County | 16 | 1870 | High | Fair |
| Lake Barylick Dam Warren County | 25 | 1965 | Low | Not Rated |
| Lake Ashroe Dam Sussex County | 19 | 1972 | Significant | Satisfactory |
| Lake Arrowhead Dam Morris County | 8 | 1925 | Significant | Satisfactory |
| Lake Arcadia Dam #2 Passaic County | 18 | 1926 | Significant | Poor |
| Lake Arcadia Dam #1 Passaic County | 22 | 1926 | High | Poor |
| Lake Anne Dam Sussex County | 10 | 1950 | Low | Satisfactory |
| Lake Ames Dam Morris County | 9 | 1934 | Significant | Poor |
| Lake Albert Dam Atlantic County | 9 | 1959 | Low | Poor |
| Lake Aeroflex Dam Sussex County | 15 | — | Low | Poor |
| Laidlaws Pond Dam Sussex County | 20 | 1998 | Low | Satisfactory |
| Lahaway Plantation Dam Ocean County | 14 | — | Low | Not Rated |
| Kuehnle Pond Dam Atlantic County | 14 | 1935 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.