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 151–175 of 232
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Arcadia Dam #1 Passaic County | 22 | 1926 | High | Poor |
| Kemah Lake Dam Sussex County | 17 | 1928 | High | Satisfactory |
| Kampfe Lake Dam Passaic County | 13 | 1897 | High | Satisfactory |
| Kakeout Dike Morris County | 13 | — | High | Satisfactory |
| Kakeout Dam Morris County | 30 | 1938 | High | Satisfactory |
| Jaqui Mill Dam Morris County | 27 | 1920 | High | Poor |
| Irish Brook Dam Passaic County | 17 | 1923 | High | Satisfactory |
| Highland Lakes Dam Sussex County | 22 | 1937 | High | Satisfactory |
| Highland Lake Dam Passaic County | 40 | 1947 | High | Satisfactory |
| High Crest Lake Dam Passaic County | 22 | 1952 | High | Poor |
| Hidden Valley Lake Dam Sussex County | 10 | — | High | Satisfactory |
| Heaters Pond Dam Sussex County | 8 | 1910 | High | Satisfactory |
| Haledon Reservoir Dam Passaic County | 25 | 1919 | High | Satisfactory |
| Hackettstown Res. Dam Morris County | 38 | — | High | Poor |
| Hackensack Res. # 2 (Weehawken) Dam Hudson County | — | — | High | Fair |
| Greenwood Lake Dam Passaic County | 17 | 1928 | High | Poor |
| Green Turtle Pond Dam Passaic County | 35 | — | High | Fair |
| Green Swamp #4 Dam Passaic County | 65 | 1925 | High | Satisfactory |
| Green Swamp #3 Dam Passaic County | 18 | 1926 | High | Satisfactory |
| Green Swamp #2 Dam Passaic County | 65 | 1925 | High | Satisfactory |
| Green Swamp #1 Dam Passaic County | 29 | 1926 | High | Satisfactory |
| Great Notch Reservoir Dam Passaic County | 74 | 1898 | High | Satisfactory |
| Great Gorge Dam Sussex County | 28 | 1971 | High | Satisfactory |
| Gordon Lakes Dam Passaic County | 12 | — | High | Satisfactory |
| Glen Lake Dam Sussex County | 12 | 1922 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.