Raccoon Lake Dam, located in Marion, Illinois, is a vital water supply infrastructure managed by the local government.
Wind
Humidity
Built in 1943 by the renowned designers Greeley & Hansen, this Earth-type dam stands at a height of 29 feet and spans a length of 1480 feet, with a maximum storage capacity of 6700 acre-feet. The dam's primary purpose is for water supply, serving the surrounding area with a normal storage capacity of 4709 acre-feet and a surface area of 730 acres.
The dam overlooks Raccoon Creek and is regulated by the Illinois Department of Natural Resources (IDNR), ensuring that it meets state inspection, permitting, and enforcement requirements. With a controlled spillway type and Tainter (radial) outlet gates, the dam has a high hazard potential and a very high risk assessment rating. Although its condition assessment is not available, efforts to manage risks and ensure safety measures are in place to minimize potential hazards. Overall, Raccoon Lake Dam plays a crucial role in providing essential water resources to the community while adhering to state regulatory standards.
As a significant part of the water supply infrastructure in Central City, Raccoon Lake Dam stands as a testament to effective dam design and management. With its historical significance dating back to the 1940s, the dam continues to serve its primary purpose while maintaining a high level of risk management and safety protocols. For water resource and climate enthusiasts, the engineering and operational aspects of Raccoon Lake Dam offer a fascinating insight into the intersection of infrastructure development, environmental stewardship, and community resilience in the face of changing climate patterns.
Year Completed |
1943 |
Dam Length |
1480 |
Dam Height |
29 |
River Or Stream |
RACCON CREEK |
Primary Dam Type |
Earth |
Surface Area |
730 |
Drainage Area |
48.5 |
Nid Storage |
6700 |
Outlet Gates |
Tainter (radial) |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
29 |