A. E. Staley Cooling Lake Dam is an earth dam located in Macon County, Illinois, built in 1944. It carries a Significant hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 1,000 ft long. 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 A. E. Staley Cooling Lake Dam
A. E. Staley Cooling Lake Dam is a dam in Macon, Illinois. The dam is owned by A. E. Staley Company (private). It impounds the Sangamon-offstream near Decatur.
The dam stands 22 feet tall and stretches 1,000 feet across, and has a maximum storage capacity of 193 acre-feet. Completed in 1944, the structure is well-established, with more than 75 years of service.
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 06/07/2016. That was over 10 years ago.
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Location
| State | Illinois |
| County | Macon |
| Nearest City | Decatur |
| River/Stream | Sangamon-offstream |
| Coordinates | 39.84797, -88.91309 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1944 (82 years old) |
Storage & Hydraulics
| NID Storage | 193 acre-ft |
| Max Storage | 193 acre-ft |
| Normal Storage | 123 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | A. E. Staley Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 06/07/2016 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00515 |
| Federal ID | IL00515 |
| More Info | State Dam Safety Program |