White Hall Reservoir Dam
White Hall Reservoir Dam is an earth dam located in Greene County, Illinois, built in 1952. It carries a Significant hazard potential classification.
About White Hall Reservoir Dam
The primary purpose of White Hall 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 White Hall (local government). It impounds the Trib Wolf Run Creek near Whitehall.
The dam stands 38 feet tall and stretches 1,060 feet across, creates a reservoir covering 50 acres, has a maximum storage capacity of 817 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1952, the structure is well into its service life at over 50 years 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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/22/2025.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Illinois |
| County | Greene |
| Nearest City | Whitehall |
| River/Stream | Trib Wolf Run Creek |
| Coordinates | 39.44152, -90.37679 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 1,060 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 817 acre-ft |
| Max Storage | 817 acre-ft |
| Normal Storage | 556 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 673 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | CITY OF WHITE HALL |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 08/22/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL00757 |
| Federal ID | IL00757 |
| More Info | State Dam Safety Program |