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.

High HazardFair ConditionEmergency Action Plan: Yes

Location

StateDelaware
CountyNew Castle
Nearest CityOdessa
River/StreamDeep Creek
Coordinates39.43801, -75.69339

Physical Characteristics

Dam TypeGravity
NID Height18 ft
Dam Height18 ft
Dam Length520 ft
Year Completed1931 (95 years old)

Storage & Hydraulics

NID Storage452 acre-ft
Max Storage452 acre-ft
Normal Storage149 acre-ft
Surface Area45 acres
Drainage Area6 sq mi
Max Discharge2,100 cfs
Spillway TypeControlled

Ownership & Safety

PurposeRecreation
OwnerDELDOT
Owner TypeState
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection05/16/2024
Emergency Action PlanYes

Identifiers

NID IDDE00051
Federal IDDE00051
More InfoState Dam Safety Program

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