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 332
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Nosenzo Pond Dam Passaic County | 9 | 1927 | Significant | Satisfactory |
| Northridge Pond Dam Somerset County | 13 | — | Significant | Satisfactory |
| Newton Lake Dam Camden County | 10 | 1929 | Significant | Satisfactory |
| New Market Pond Dam Middlesex County | 7 | 1830 | Significant | Satisfactory |
| New Jersey No Name # 32 Dam Hunterdon County | 40 | — | Significant | Satisfactory |
| New Jersey No Name # 131 Dam Salem County | 9 | — | Significant | Poor |
| New Jersey No Name # 11 Dam Sussex County | 12 | 1957 | Significant | Poor |
| New Jersey No Name # 113 Dam Ocean County | 10 | 1965 | Significant | Satisfactory |
| New Brooklyn Dam Camden County | 9 | 1936 | Significant | Poor |
| Neptune Basin Dam Ocean County | 18 | — | Significant | Poor |
| Navesink River Road Dam Monmouth County | — | — | Significant | Poor |
| Narraticon Lake Dam Gloucester County | 20 | 1934 | Significant | Satisfactory |
| Mullica Hill Pond Dam Gloucester County | 19 | 1922 | Significant | Satisfactory |
| Mt. Kemble Lake Dam Morris County | 36 | 1928 | Significant | Satisfactory |
| Mt. Hope Pond Dam Morris County | 15 | 1930 | Significant | Poor |
| Mountain Valley Park Dam Morris County | 10 | 1950 | Significant | Satisfactory |
| Morris County Ymca Dam Morris County | 18 | 1928 | Significant | Satisfactory |
| Moose Pac Lake Dam Morris County | 10 | 1918 | Significant | Poor |
| Mine Hill Reservoir Dam Morris County | 30 | 1896 | Significant | Poor |
| Milton Lake Dam Union County | 10 | 1937 | Significant | Satisfactory |
| Memorial Park Dam Cumberland County | 8 | — | Significant | Poor |
| Mcvicker'S Brook Dam Morris County | 32 | — | Significant | Poor |
| Mcafee Glenwood Road Dam No. 2 Sussex County | 15 | 2000 | Significant | Satisfactory |
| Mcafee Glenwood Road Dam No. 1 Sussex County | 8 | 2000 | Significant | Satisfactory |
| Maskells Mill Pond Dam Salem County | 13 | 1955 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.