City Of Wilmington Sewage Lagoon
City Of Wilmington Sewage Lagoon is a gravity dam located in New Castle County, Delaware. It carries a High hazard potential classification and has a fair condition assessment.
About City Of Wilmington Sewage Lagoon
City Of Wilmington Sewage Lagoon is a dam in New Castle, Delaware. The dam is owned by City Of Wilmington (local government). It impounds the Delaware River-os.
The dam stands 21 feet tall and stretches 570 feet across, creates a reservoir covering 33 acres, has a maximum storage capacity of 1,370 acre-feet, and collects water from a drainage area of 0 square miles.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Delaware dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Delaware |
| County | New Castle |
| Nearest City | None |
| River/Stream | Delaware River-os |
| Coordinates | 39.72813, -75.50730 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 570 ft |
Storage & Hydraulics
| NID Storage | 1,370 acre-ft |
| Max Storage | 1,370 acre-ft |
| Normal Storage | 1,213 acre-ft |
| Surface Area | 33 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | CITY OF WILMINGTON |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | DE00073 |
| Federal ID | DE00073 |
| More Info | State Dam Safety Program |