Lake Bracken Dam
Lake Bracken Dam is an earth dam located in Knox County, Illinois, built in 1922. It carries a Significant hazard potential classification.
About Lake Bracken Dam
Lake Bracken Dam is a dam in Knox, Illinois. The dam is owned by Bracken Holdings Corp (local government). It impounds the Brush Creek near Delong-offstream.
The dam stands 47 feet tall and stretches 620 feet across, and has a maximum storage capacity of 2,020 acre-feet. Completed in 1922, 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. The most recent inspection on record was 10/29/2024.
At 47 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Illinois |
| County | Knox |
| Nearest City | Delong-offstream |
| River/Stream | Brush Creek |
| Coordinates | 40.85738, -90.34856 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 47 ft |
| Dam Length | 620 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 2,020 acre-ft |
| Max Storage | 2,020 acre-ft |
| Normal Storage | 884 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | BRACKEN HOLDINGS CORP |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 10/29/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00415 |
| Federal ID | IL00415 |
| More Info | State Dam Safety Program |