Silver Lake Dam - Middletown
Silver Lake Dam - Middletown is a gravity dam located in New Castle County, Delaware, built in 1931. It carries a High hazard potential classification and has a fair condition assessment.
About Silver Lake Dam - Middletown
The primary purpose of Silver Lake Dam - Middletown is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Deldot (state). It impounds the Deep Creek near Odessa.
The dam stands 18 feet tall and stretches 520 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 452 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1931, the structure is well-established, with more than 75 years of service.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 05/16/2024.
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 | Odessa |
| River/Stream | Deep Creek |
| Coordinates | 39.43801, -75.69339 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 520 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 452 acre-ft |
| Max Storage | 452 acre-ft |
| Normal Storage | 149 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 2,100 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | DELDOT |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 05/16/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | DE00051 |
| Federal ID | DE00051 |
| More Info | State Dam Safety Program |