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 176–200 of 232
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Glendola Reservoir Dam Monmouth County | 65 | 1961 | High | Satisfactory |
| Furnace Road Dam Passaic County | 20 | 1928 | High | Satisfactory |
| Furnace Brook W.S. #2 Dam Warren County | 55 | 1971 | High | Satisfactory |
| Frenches Pond Dam Sussex County | 13 | 1850 | High | Satisfactory |
| Fox Lake Dam Morris County | 22 | 1926 | High | Satisfactory |
| Forest Lake Dam Sussex County | 20 | 1951 | High | Satisfactory |
| Farrington Dam Middlesex County | 34 | 1926 | High | Fair |
| Erskine Upper Lake Dam Passaic County | 20 | 1932 | High | Fair |
| Elkinton Pond Dam Salem County | 20 | 1923 | High | Poor |
| Echo Lake Spillway Dam Passaic County | 22 | 1926 | High | Fair |
| Echo Lake Intake Dam Passaic County | 32 | 1926 | High | Fair |
| Echo Lake Dam Monmouth County | 8 | — | High | Satisfactory |
| East Lake Dam Cumberland County | 17 | — | High | Satisfactory |
| East Cove Dam Sussex County | 15 | — | High | Fair |
| East Branch Reservoir Dam Somerset County | 33 | 1905 | High | Satisfactory |
| Donald R. Wheeler (Surprise Lake) Dam Morris County | 22 | 1909 | High | Satisfactory |
| Diversion Dam Sussex County | 8 | 1959 | High | Poor |
| Devoe Lake Dam Middlesex County | 15 | 1935 | High | Satisfactory |
| Deer Head Lake Dam Ocean County | 9 | — | High | Fair |
| Cupsaw Lake Dam Passaic County | 35 | 1930 | High | Poor |
| Crystal Spring Lake Dam Bergen County | 12 | 1900 | High | Satisfactory |
| Crystal Lake Dam Morris County | 16 | — | High | Satisfactory |
| Crandon Lake Dam Sussex County | 20 | 1959 | High | Satisfactory |
| Cranberry Lake Dam Sussex County | 18 | — | High | Poor |
| Core Wall Dam Passaic County | 7 | — | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.