Little Cache Structure 10 Dam
Little Cache Structure 10 Dam is an earth dam located in Johnson County, Illinois, built in 1969. It carries a Low hazard potential classification.
About Little Cache Structure 10 Dam
The primary purpose of Little Cache Structure 10 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by City Of Vienna (local government). It impounds the Trib Little Cache Creek near Vienna.
The dam stands 36 feet tall and stretches 1,040 feet across, and has a maximum storage capacity of 1,458 acre-feet. Completed in 1969, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 07/26/2024.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Illinois |
| County | Johnson |
| Nearest City | Vienna |
| River/Stream | Trib Little Cache Creek |
| Coordinates | 37.45219, -88.84426 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 1,040 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 1,458 acre-ft |
| Max Storage | 1,458 acre-ft |
| Normal Storage | 944 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CITY OF VIENNA |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 07/26/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00956 |
| Federal ID | IL00956 |
| More Info | State Dam Safety Program |