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 776–800 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bethany Hole Dam Burlington County | 11 | — | Significant | Poor |
| Bennetts Mills Dam Ocean County | 23 | — | Significant | Satisfactory |
| Bells Lake Dam Gloucester County | 22 | 1928 | Significant | Poor |
| Bellman Br. Bleachery Dam Bergen County | 9 | — | Low | Not Rated |
| Bee Brook Detention Dam Middlesex County | 11 | — | Low | Not Rated |
| 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 |
| Bear Pond Dam B Sussex County | 10 | 1900 | Significant | Satisfactory |
| Bear Pond Dam A Sussex County | 16 | 1905 | Significant | Satisfactory |
| Bear Brook Dam Essex County | 20 | 1979 | Significant | Satisfactory |
| Bayway Refinery No. 2 Dam Union County | 12 | — | Low | Fair |
| Bayberry Street Dam Burlington County | — | — | Significant | Satisfactory |
| Batsto Lake Dam Burlington County | 12 | — | Significant | Poor |
| Bass Lake Dam Warren County | 30 | 1911 | High | Satisfactory |
| 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 |
| Barnegat Lake Dam Ocean County | 18 | 1937 | High | Fair |
| Bargaintown Mill Pond Dam Atlantic County | 10 | 1718 | Significant | Fair |
| Barbours Pond Dam Passaic County | 20 | 1888 | Significant | Fair |
| Barbour Mill Dam Passaic County | 13 | 1890 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.