Mauvaise Terre Lake Dam, located in Morgan County, Illinois, is a key infrastructure owned by the local government and regulated by the Illinois Department of Natural Resources.
Wind
Humidity
Built in 1923, this Earth type dam serves primarily for recreation purposes, including water supply. With a height of 30 feet and a length of 850 feet, the dam holds a storage capacity of 5,624 acre-feet and covers a surface area of 262 acres.
The dam's spillway, with a width of 210 feet, is uncontrolled, posing a high hazard potential. Despite its moderate risk assessment, the condition assessment remains unavailable, highlighting the need for regular inspections to ensure the safety and integrity of the structure. The dam's emergency action plan was last revised in 2016, emphasizing the importance of updated emergency protocols and risk management measures for this vital water resource facility.
Mauvaise Terre Lake Dam plays a crucial role in water management and recreation in the region, with the potential to impact surrounding areas in the event of a breach. As water resource and climate enthusiasts, understanding the risk factors and maintenance protocols associated with this dam is essential for ensuring the long-term sustainability and safety of this important infrastructure in Illinois.
Year Completed |
1923 |
Dam Length |
850 |
Dam Height |
30 |
River Or Stream |
MAUVAISE TERRE CREEK |
Primary Dam Type |
Earth |
Surface Area |
262 |
Drainage Area |
34.3 |
Nid Storage |
5624 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Illinois River At Valley City
|
4670cfs |
Sangamon River At Petersburg
|
199cfs |
Spring Creek At Springfield
|
6cfs |
La Moine River At Ripley
|
23cfs |
Sangamon River Near Oakford
|
582cfs |
Bay Creek At Pittsfield
|
43cfs |