LaGrange Lock and Dam, located in Illinois on the Illinois River, serves as a crucial infrastructure for navigation purposes.
Wind
Humidity
Built in 1939 by the US Army Corps of Engineers, this concrete dam stands at a structural height of 21 feet and spans a length of 676 feet. The dam features a single lock measuring 600 feet in length and 110 feet in width, with outlet gates including Needle and Tainter types.
Despite being classified as having a significant hazard potential due to scour conditions below the dam, LaGrange Lock and Dam has undergone major rehabilitation efforts in 2020 to enhance its efficiency and reliability. The USACE continuously monitors and maintains the dam through detailed inspections, regular maintenance activities, and a robust instrumentation and monitoring program. In addition, the dam's Emergency Action Plan is regularly updated and coordinated with state and local authorities to ensure swift response in case of emergencies. With risk management measures in place and ongoing communication efforts with stakeholders and the public, LaGrange Lock and Dam remains a well-maintained and essential component of the region's water resource infrastructure.
Year Completed |
1939 |
Dam Length |
676 |
River Or Stream |
ILLINOIS RIVER |
Primary Dam Type |
Concrete |
Length Of Locks |
600 |
Hydraulic Height |
10 |
Drainage Area |
25648 |
Nid Storage |
55000 |
Structural Height |
21 |
Outlet Gates |
Needle - 109, Tainter (radial) - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
21 |
La Moine River At Ripley
|
33cfs |
Illinois River At Valley City
|
2970cfs |
Bay Creek At Pittsfield
|
43cfs |
Sangamon River Near Oakford
|
356cfs |
La Moine River At Colmar
|
17cfs |
Sangamon River At Petersburg
|
146cfs |