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 801–825 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bankbridge Dam Gloucester County | 21 | — | Low | Satisfactory |
| Bamber Lake Dam Ocean County | 12 | — | Low | Fair |
| Ballingers Mill Pond Dam Salem County | 18 | 1929 | Significant | Poor |
| Ballinger Lake Dam Burlington County | 11 | — | High | Satisfactory |
| Balesville Dam Sussex County | 9 | — | Low | Not Rated |
| Atsion Lake Dam Burlington County | 19 | 1930 | High | Poor |
| Atco Lake Dam Camden County | 8 | — | Significant | Satisfactory |
| Assunpink #8 Dam Mercer County | 20 | — | High | Poor |
| Assunpink # 6 Dam Mercer County | 31 | 1975 | High | Satisfactory |
| Assunpink #5 Dam Monmouth County | 13 | — | Low | Satisfactory |
| Assunpink #4 Dam Monmouth County | 24 | — | High | Poor |
| Assunpink #21 Dam Mercer County | 25 | — | High | Satisfactory |
| Assunpink #20 Dam Mercer County | 26 | — | High | Satisfactory |
| Assunpink #19 Dam Monmouth County | 36 | — | Significant | Fair |
| Assunpink #18 Dam Monmouth County | 38 | — | High | Poor |
| Asbury Mill Dam Warren County | 12 | — | Low | Not Rated |
| Arrowhead Lake Pond Dam Cumberland County | 15 | 1972 | Significant | Poor |
| Apshawa Main Dam Passaic County | 22 | 1912 | Significant | Satisfactory |
| Apshawa Auxiliary Dam Passaic County | 16 | — | Significant | Satisfactory |
| Ancora Pond Dam Camden County | 8 | — | Significant | Poor |
| Amwell No. 3 Dam Hunterdon County | 26 | 1970 | Significant | Satisfactory |
| Amwell No. 1 Dam Hunterdon County | 22 | — | Significant | Satisfactory |
| Amwell #2 Dam Hunterdon County | 19 | — | Significant | Satisfactory |
| Amphibious Lake Dam Burlington County | 21 | 1967 | Low | Not Available |
| Almonesson Lake Dam Gloucester County | 24 | 1926 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.