Lake McMaster Dam, also known as Snakeden Hollow Dam, is a state-owned structure located in Dahinda, Illinois, within Knox County.
Wind
Humidity
Completed in 1981, this earth dam stands at a height of 81 feet and spans 850 feet across. Its primary purpose is for recreation, offering a beautiful setting for outdoor enthusiasts to enjoy activities such as fishing, boating, and picnicking within its 178-acre surface area.
The dam is regulated by the Illinois Department of Natural Resources (IDNR) and has a high hazard potential due to its location on Snakeden Creek. With a maximum storage capacity of 5350 acre-feet, it serves as a vital resource for water supply and flood control in the region. The spillway, with a width of 313 feet, is uncontrolled, allowing excess water to flow out during heavy rainfall events.
Despite its high hazard potential, the condition assessment of Lake McMaster Dam is currently listed as not available. Regular inspections are conducted, with the last inspection taking place in July 2020. While the risk assessment is considered moderate, the dam's emergency action plan (EAP) status and risk management measures are unspecified. Overall, Lake McMaster Dam serves as a key recreational and water resource for the community, warranting ongoing monitoring and maintenance to ensure its safety and functionality.
Year Completed |
1981 |
Dam Length |
850 |
Dam Height |
81 |
River Or Stream |
SNAKEDEN CREEK |
Primary Dam Type |
Earth |
Surface Area |
178 |
Drainage Area |
2.13 |
Nid Storage |
5350 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
81 |
Indian Creek Near Wyoming
|
12cfs |
Spoon River At London Mills
|
79cfs |
Edwards River Near Orion
|
66cfs |
Green River Near Geneseo
|
185cfs |
Illinois River At Kingston Mines
|
4770cfs |
Fondulac Creek Near East Peoria
|
0cfs |