New Jersey Dam Safety — USACE National Inventory
Source: USACE National Inventory of Dams
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Dam Safety for New Jersey, latest reading.
What this means
New Jersey has roughly 2,500 dams in the federal inventory. Each dam is classified by potential downstream impact if it fails: High (loss of life expected), Significant (economic damage), or Low. The 2020 Edenville dam failure flooded thousands of homes — a reminder of why this list matters.
What you can do
- If you live downstream of a High-hazard dam, ask State EPA for the dam's Emergency Action Plan — they're public records.
- State EPA dam safety inspections are required every 1–4 years depending on hazard class.
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