Silver Lake Dam
Silver Lake Dam is an earth dam located in Madison County, Illinois, built in 1962. It carries a Significant hazard potential classification.
About Silver Lake Dam
The primary purpose of Silver Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Highland (local government). It impounds the East Fork Silver Creek near Mascoutah.
The dam stands 29 feet tall and stretches 2,780 feet across, and has a maximum storage capacity of 9,945 acre-feet. Completed in 1962, 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 06/14/2024.
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Location
| State | Illinois |
| County | Madison |
| Nearest City | Mascoutah |
| River/Stream | East Fork Silver Creek |
| Coordinates | 38.76561, -89.70109 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 2,780 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 9,945 acre-ft |
| Max Storage | 9,945 acre-ft |
| Normal Storage | 4,224 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF HIGHLAND |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 06/14/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL00178 |
| Federal ID | IL00178 |
| More Info | State Dam Safety Program |