Manchester Farm Regional Swm Pond Dam
Manchester Farm Regional Swm Pond Dam is an earth dam located in Montgomery County, Maryland, built in 1996. It carries a Significant hazard potential classification and has a fair condition assessment.
About Manchester Farm Regional Swm Pond Dam
The primary purpose of Manchester Farm Regional Swm Pond Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Montgomery County Dep (local government). It impounds the Great Seneca Creek-tr near Germantown.
The dam stands 21 feet tall and stretches 415 feet across, creates a reservoir covering 0 acres, has a maximum storage capacity of 93 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1996, the structure is 30 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 03/10/2022.
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Location
| State | Maryland |
| County | Montgomery |
| Nearest City | Germantown |
| River/Stream | Great Seneca Creek-tr |
| Coordinates | 39.17516, -77.29286 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 415 ft |
| Year Completed | 1996 (30 years old) |
Storage & Hydraulics
| NID Storage | 93 acre-ft |
| Max Storage | 93 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2,350 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Montgomery County DEP |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 03/10/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00585 |
| Federal ID | MD00585 |
| More Info | State Dam Safety Program |