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 401–425 of 830
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Tranquility Dam Sussex County | 14 | 1932 | High | Satisfactory |
| Lake Topanemus Dam Monmouth County | 20 | 1915 | High | Fair |
| Lake Telemark Dam Morris County | 11 | 1924 | Significant | Satisfactory |
| Lake Tappan Dike Bergen County | 20 | — | Low | Not Rated |
| Lake Tappan Dam Bergen County | 34 | 1966 | High | Satisfactory |
| Lake Tamarack Dam Sussex County | 10 | 1940 | High | Satisfactory |
| Lake Tamarack Dam Bergen County | 11 | — | Low | Poor |
| Lake Sycamore Dam Salem County | 13 | — | Low | Poor |
| Lake Susquehanna Dam Warren County | 19 | 1926 | Low | Not Rated |
| Lake Stockwell Dam Burlington County | 12 | 1926 | Significant | Satisfactory |
| Lake Stockholm Dam Sussex County | 16 | 1920 | Significant | Satisfactory |
| Lake Sonoma Dam Passaic County | 24 | 1948 | Low | Not Rated |
| Lake Solitude Dam Hunterdon County | 42 | — | High | Satisfactory |
| Lake Shenandoah Dam Ocean County | 17 | 1934 | Significant | Fair |
| Lake Shawnee Dam Morris County | 9 | — | Significant | Poor |
| Lake Saginaw Dam Sussex County | 16 | 1925 | Low | Poor |
| Lake Rutherford Dam Sussex County | 12 | — | High | Satisfactory |
| Lake Riviera Dam Ocean County | 11 | — | Significant | Satisfactory |
| Lake Riconda Dam Passaic County | 14 | 1937 | Low | Satisfactory |
| Lake Reality Dam Morris County | 14 | 1940 | Significant | Poor |
| Lake Plymouth Dam Sussex County | 14 | 1951 | Significant | Unsatisfactory |
| Lake Pine Dam Burlington County | 14 | 1941 | Significant | Fair |
| Lake Parsippany West Dike #1 Morris County | 8 | 1933 | High | Satisfactory |
| Lake Parsippany East Dike No. 2 Morris County | 5 | 1933 | High | Satisfactory |
| Lake Parsippany Dam Morris County | 13 | 1933 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.