Echo Lake Dam
Echo Lake Dam is an earth dam located in Miami County, Ohio, built in 1876. It carries a High hazard potential classification and has a poor condition assessment.
About Echo Lake Dam
The primary purpose of Echo 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 Tributary To Swift Run near Piqua.
The dam stands 14 feet tall and stretches 660 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 142 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1876, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Ohio dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Ohio |
| County | Miami |
| Nearest City | Piqua |
| River/Stream | Tributary To Swift Run |
| Coordinates | 40.15611, -84.26028 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 660 ft |
| Year Completed | 1876 (150 years old) |
Storage & Hydraulics
| NID Storage | 142 acre-ft |
| Max Storage | 142 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 926 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Piqua |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 11/26/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH02103 |
| Federal ID | OH02103 |
| More Info | State Dam Safety Program |