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 251–266 of 266
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Beaver Lake Dam Camden County | 7 | — | Low | Poor |
| Beaver Lake Dam Sussex County | 12 | 1770 | Low | Satisfactory |
| Beaver Dam Cumberland County | 11 | 1927 | Low | Poor |
| Beatties Mill Dam Passaic County | 12 | 1932 | Low | Satisfactory |
| Bear Swamp Pond Dam Bergen County | 14 | — | Low | Not Rated |
| Bear Pond Dam D Sussex County | 33 | 1905 | Low | Satisfactory |
| Bayway Refinery No. 2 Dam Union County | 12 | — | Low | Fair |
| Bass Lake Dam Ocean County | 10 | — | Low | Not Available |
| Barry Lakes #2 Dam Sussex County | 12 | 1955 | Low | Satisfactory |
| Barry Lakes #1 Dam Sussex County | 8 | 1955 | Low | Fair |
| Bankbridge Dam Gloucester County | 21 | — | Low | Satisfactory |
| Bamber Lake Dam Ocean County | 12 | — | Low | Fair |
| Balesville Dam Sussex County | 9 | — | Low | Not Rated |
| Assunpink #5 Dam Monmouth County | 13 | — | Low | Satisfactory |
| Asbury Mill Dam Warren County | 12 | — | Low | Not Rated |
| Amphibious Lake Dam Burlington County | 21 | 1967 | Low | Not Available |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.