Evans Lake Dam
Evans Lake Dam is an earth dam located in Mahoning County, Ohio, built in 1948. It carries a High hazard potential classification and has a fair condition assessment.
About Evans Lake Dam
The primary purpose of Evans 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 Aqua Ohio, Inc. (public utility). It impounds the Yellow Creek near Poland.
The dam stands 49 feet tall and stretches 3,860 feet across, creates a reservoir covering 582 acres, has a maximum storage capacity of 12,574 acre-feet, and collects water from a drainage area of 14 square miles. Completed in 1948, the structure is well-established, with more than 75 years of service.
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 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 12/14/2021.
At 49 feet, this dam is taller than 92% of dams nationwide.
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 | Mahoning |
| Nearest City | Poland |
| River/Stream | Yellow Creek |
| Coordinates | 40.98111, -80.61833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 3,860 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 12,574 acre-ft |
| Max Storage | 12,574 acre-ft |
| Normal Storage | 6,402 acre-ft |
| Surface Area | 582 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 10,772 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Aqua Ohio, Inc. |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 12/14/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH00631 |
| Federal ID | OH00631 |
| More Info | State Dam Safety Program |