Weldon Springs State Park Lake Dam is an earth dam located in De Witt County, Illinois, built in 1900. It carries a Significant hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 73 ft long, taller than 68% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Weldon Springs State Park Lake Dam
The primary purpose of Weldon Springs State Park Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Illinois Department of Natural Resources (state). It impounds the Trib Salt Creek near Kenney.
The dam stands 30 feet tall and stretches 73 feet across, creates a reservoir covering 29 acres, has a maximum storage capacity of 532 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1900, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 11/02/2023.
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Location
| State | Illinois |
| County | De Witt |
| Nearest City | Kenney |
| River/Stream | Trib Salt Creek |
| Coordinates | 40.11892, -88.92198 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 73 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 532 acre-ft |
| Max Storage | 532 acre-ft |
| Normal Storage | 303 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,292 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Illinois Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/02/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL00206 |
| Federal ID | IL00206 |
| More Info | State Dam Safety Program |