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 101–125 of 266
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| John'S Lake Dam Sussex County | 11 | — | Low | Satisfactory |
| Johnson Lake Dam Sussex County | 11 | — | Low | Satisfactory |
| J. Seward Johnson Dam Hunterdon County | 24 | 1967 | Low | Poor |
| Jumping Brook Dam Monmouth County | 10 | 1907 | Low | Satisfactory |
| Kelly Dam Salem County | 20 | 1957 | Low | Not Rated |
| Kenilworth #2 (Flamingo Road) Dam Burlington County | 8 | — | Low | Poor |
| Kennedy Pond Dam Ocean County | 15 | — | Low | Not Rated |
| Keswick Grove Lower Dam Ocean County | 8 | 1898 | Low | Satisfactory |
| Kettle Run Dam Burlington County | 14 | 1885 | Low | Fair |
| Kirkwood Lake Dam Camden County | 13 | 1931 | Low | Poor |
| Kittatinny Lake Dam Sussex County | 10 | 1923 | Low | Satisfactory |
| Kofferls Pond Dam Sussex County | 20 | — | Low | Not Rated |
| Kohout Lake Dam Sussex County | 12 | 1939 | Low | Not Rated |
| Kopycinski Pond Dam Warren County | 20 | — | Low | Not Rated |
| Lahaway Plantation Dam Ocean County | 14 | — | Low | Not Rated |
| Laidlaws Pond Dam Sussex County | 20 | 1998 | Low | Satisfactory |
| Lake Aeroflex Dam Sussex County | 15 | — | Low | Poor |
| Lake Albert Dam Atlantic County | 9 | 1959 | Low | Poor |
| Lake Anne Dam Sussex County | 10 | 1950 | Low | Satisfactory |
| Lake Barylick Dam Warren County | 25 | 1965 | Low | Not Rated |
| Lake George Dam Atlantic County | 12 | 1959 | Low | Poor |
| Lake Horicon Dam Ocean County | 7 | 1942 | Low | Not Rated |
| Lake Kalmia Dam Warren County | 8 | 1936 | Low | Poor |
| Lake Kathryn Dam Sussex County | 12 | 1926 | Low | Satisfactory |
| Lake Kathryn South Dam Sussex County | 10 | — | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.