Nashville City Reservoir Dam
Nashville City Reservoir Dam is an earth dam located in Washington County, Illinois, built in 1935. It carries a High hazard potential classification.
About Nashville City Reservoir Dam
The primary purpose of Nashville City Reservoir Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City Of Nashville (local government). It impounds the Trib Nashville Creek near Pinkneyville.
The dam stands 26 feet tall and stretches 740 feet across, creates a reservoir covering 52 acres, has a maximum storage capacity of 701 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1935, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 06/26/2024.
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 Illinois 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 | Illinois |
| County | Washington |
| Nearest City | Pinkneyville |
| River/Stream | Trib Nashville Creek |
| Coordinates | 38.34482, -89.36405 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 740 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 701 acre-ft |
| Max Storage | 701 acre-ft |
| Normal Storage | 400 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 9,710 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | CITY OF NASHVILLE |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 06/26/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL00138 |
| Federal ID | IL00138 |
| More Info | State Dam Safety Program |