Carlyle Dam - Saddle Dam 2
Carlyle Dam - Saddle Dam 2 is an earth dam located in Clinton County, Illinois, built in 1966. It carries a Significant hazard potential classification.
About Carlyle Dam - Saddle Dam 2
The primary purpose of Carlyle Dam - Saddle Dam 2 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 Usace - St. Louis District (federal). It impounds the Kaskaskia River near Carlyle.
The dam stands 22 feet tall and stretches 8,160 feet across, creates a reservoir covering 24,580 acres, has a maximum storage capacity of 233,000 acre-feet, and collects water from a drainage area of 2,717 square miles. Completed in 1966, 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 08/12/2021.
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Location
| State | Illinois |
| County | Clinton |
| Nearest City | Carlyle |
| River/Stream | Kaskaskia River |
| Coordinates | 38.61524, -89.32249 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 8,160 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 233,000 acre-ft |
| Max Storage | 233,000 acre-ft |
| Normal Storage | 233,000 acre-ft |
| Surface Area | 24,580 acres |
| Drainage Area | 2,717 sq mi |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - St. Louis District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 08/12/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL00113 |
| Federal ID | IL00113S002 |
| More Info | State Dam Safety Program |