Lake Allen Dam
Lake Allen Dam is an earth dam located in Anne Arundel County, Maryland, built in 1947. It carries a Low hazard potential classification and has a poor condition assessment.
About Lake Allen Dam
The primary purpose of Lake Allen Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Midway Branch.
The dam stands 11 feet tall and stretches 410 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 144 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1947, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 11/18/2016.
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Location
| State | Maryland |
| County | Anne Arundel |
| River/Stream | Midway Branch |
| Coordinates | 39.08167, -76.73333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 410 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 144 acre-ft |
| Max Storage | 144 acre-ft |
| Normal Storage | 43 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 11/18/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MD00066 |
| Federal ID | MD00066 |
| More Info | State Dam Safety Program |