Valley Mall Expansion Swm Dam
Valley Mall Expansion Swm Dam is an earth dam located in Washington County, Maryland, built in 1987. It carries a Low hazard potential classification.
About Valley Mall Expansion Swm Dam
The primary purpose of Valley Mall Expansion Swm 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 Crown American (private). It impounds the Conococheague-tr-semple Run near Williamsport.
The dam stands 19 feet tall and stretches 1,900 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 58 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1987, the structure is 39 years old.
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.
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Location
| State | Maryland |
| County | Washington |
| Nearest City | Williamsport |
| River/Stream | Conococheague-tr-semple Run |
| Coordinates | 39.62045, -77.77811 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 1,900 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 58 acre-ft |
| Max Storage | 58 acre-ft |
| Normal Storage | 8 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 444 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Crown American |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00525 |
| Federal ID | MD00525 |
| More Info | State Dam Safety Program |