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 126–150 of 266
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Lenore Dam Morris County | 12 | — | Low | Poor |
| Lake Marcia Dam Sussex County | 15 | — | Low | Not Rated |
| Lake Morski Oko Dam Morris County | 12 | 1953 | Low | Satisfactory |
| Lake Owassa Dam Sussex County | 10 | — | Low | Not Rated |
| Lake Riconda Dam Passaic County | 14 | 1937 | Low | Satisfactory |
| Lake Saginaw Dam Sussex County | 16 | 1925 | Low | Poor |
| Lake Sonoma Dam Passaic County | 24 | 1948 | Low | Not Rated |
| Lake Susquehanna Dam Warren County | 19 | 1926 | Low | Not Rated |
| Lake Sycamore Dam Salem County | 13 | — | Low | Poor |
| Lake Tamarack Dam Bergen County | 11 | — | Low | Poor |
| Lake Tappan Dike Bergen County | 20 | — | Low | Not Rated |
| Lake Wanda Dam Sussex County | 7 | — | Low | Poor |
| Lake Washington Dam Passaic County | 11 | 1930 | Low | Unsatisfactory |
| Lake Wasigan Dam Warren County | 10 | — | Low | Satisfactory |
| Lake Windsor Dam Sussex County | 32 | 1959 | Low | Satisfactory |
| Laurel Lake Dam Cumberland County | 19 | 1927 | Low | Poor |
| Laurel Springs Dam Camden County | 30 | — | Low | Satisfactory |
| Lily Lake Dam Atlantic County | 9 | 1910 | Low | Fair |
| Long Pine Pond Dam Sussex County | 15 | 1995 | Low | Not Available |
| Lower Crandon Lake Dam Sussex County | 8 | — | Low | Poor |
| Make Peace Lake Dam Atlantic County | 13 | — | Low | Not Rated |
| Maple Lake Dam Atlantic County | 13 | — | Low | Not Rated |
| Marlu Lake Dam Monmouth County | 29 | 1965 | Low | Fair |
| Mashipacong Pond Dam Sussex County | 12 | — | Low | Not Rated |
| Matrix Detention Basin Mercer County | 8 | — | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.