Lake George Dam, located in Matteson, Illinois, is a state-regulated structure designed by R.
Wind
Humidity
W. Robinson & Associates to mitigate flood risks along the tributary of Butterfield Creek. Completed in 1969, this earth dam stands at a height of 20 feet and spans a length of 320 feet, providing a maximum storage capacity of 539 acre-feet. With a hazard potential rated as high and a moderate risk assessment, the dam serves primarily for flood risk reduction, with a spillway width of 15 feet to manage a maximum discharge of 870 cubic feet per second.
Despite its critical function in flood control, Lake George Dam's condition assessment is currently listed as "Not Available," indicating a need for further evaluation to ensure its operational integrity. The dam, owned by the state of Illinois, is subject to regular inspections, permitting, and enforcement by the Illinois Department of Natural Resources. With a surface area of 8 acres and a drainage area of 1.6 square miles, the dam plays a crucial role in protecting the surrounding communities from potential inundation, highlighting the importance of ongoing monitoring and maintenance to uphold its risk management measures.
Year Completed |
1969 |
Dam Length |
320 |
Dam Height |
20 |
River Or Stream |
TRIB BUTTERFIELD CREEK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Drainage Area |
1.6 |
Nid Storage |
539 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |