Swift Run Lake Dam
Swift Run Lake Dam is an earth dam located in Miami County, Ohio, built in 1876. It carries a Significant hazard potential classification and has a poor condition assessment.
About Swift Run Lake Dam
The primary purpose of Swift Run Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Piqua (local government). It impounds the Swift Run near Piqua.
The dam stands 39 feet tall and stretches 1,520 feet across, creates a reservoir covering 38 acres, has a maximum storage capacity of 629 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1876, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 11/26/2024.
At 39 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Ohio |
| County | Miami |
| Nearest City | Piqua |
| River/Stream | Swift Run |
| Coordinates | 40.17639, -84.26333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Height | 39 ft |
| Dam Length | 1,520 ft |
| Year Completed | 1876 (150 years old) |
Storage & Hydraulics
| NID Storage | 629 acre-ft |
| Max Storage | 629 acre-ft |
| Normal Storage | 452 acre-ft |
| Surface Area | 38 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 3,547 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Piqua |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/26/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH00515 |
| Federal ID | OH00515 |
| More Info | State Dam Safety Program |