Mt Airy Park-n-ride Swm Pond
Mt Airy Park-n-ride Swm Pond is an earth dam located in Frederick County, Maryland, built in 1972. It carries a Significant hazard potential classification and has a fair condition assessment.
About Mt Airy Park-n-ride Swm Pond
The primary purpose of Mt Airy Park-n-ride Swm Pond 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 Md Dot State Highway Admin (state). It impounds the Bush Creek-tr near Mt Airy.
The dam stands 15 feet tall and stretches 270 feet across, has a maximum storage capacity of 6 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, the structure is well into its service life at over 50 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. An emergency action plan is in place for this dam. The most recent inspection on record was 05/17/2021.
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Location
| State | Maryland |
| County | Frederick |
| Nearest City | Mt Airy |
| River/Stream | Bush Creek-tr |
| Coordinates | 39.36701, -77.19171 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 270 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 6 acre-ft |
| Max Storage | 6 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | MD DOT State Highway Admin |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/17/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MD00571 |
| Federal ID | MD00571 |
| More Info | State Dam Safety Program |