Lake Hillcrest Dam, located in Glen Carbon, Illinois, is a privately owned structure designed by M.B.
Wind
Humidity
Corlew & Associates. Completed in 1956, this earth dam stands at a height of 40 feet and stretches 425 feet in length, creating a reservoir with a storage capacity of 355 acre-feet. The primary purpose of the dam is for recreation, offering opportunities for activities such as fishing, boating, and wildlife observation on the 14-acre surface area of Lake Hillcrest.
Managed by the Illinois Department of Natural Resources, the dam is regulated, inspected, and enforced by state agencies to ensure its safety and compliance with regulations. The spillway, with a width of 66 feet, is uncontrolled, allowing for the release of excess water when needed. Despite a significant hazard potential, the risk assessment for Lake Hillcrest Dam is moderate, indicating a level 3 risk. With its scenic location along Trib Cahokia Creek, this dam serves as both a recreational amenity and a vital infrastructure for water resource management in the region.
Year Completed |
1956 |
Dam Length |
425 |
Dam Height |
40 |
River Or Stream |
TRIB CAHOKIA CREEK |
Primary Dam Type |
Earth |
Surface Area |
14 |
Drainage Area |
0.3 |
Nid Storage |
355 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
40 |