Hiland Lake Dam, also known as Dennis Lake, is a privately owned structure located in Hancock, Illinois.
Wind
Humidity
Built in 1965 by the USDA NRCS, this earth dam stands at a height of 29 feet and spans 270 feet in length. Its primary purpose is for recreation, offering a storage capacity of 52 acre-feet and a normal storage level of 30 acre-feet.
Managed by the Illinois Department of Natural Resources, Hiland Lake Dam is regulated, inspected, and enforced by state agencies to ensure its safety and compliance with regulations. Despite its low hazard potential, the dam poses a moderate risk according to assessments. With an uncontrolled spillway and outlet gates, the dam's risk management measures and emergency action plans are currently not available.
Water resource and climate enthusiasts interested in the engineering and management of dams will find Hiland Lake Dam intriguing. Its location on Trib Flour Creek and the involvement of the USDA NRCS in its design make it a noteworthy structure in the Rock Island District. As a recreational dam with a focus on safety and regulatory compliance, Hiland Lake Dam serves as a valuable case study in dam management practices.
Year Completed |
1965 |
Dam Length |
270 |
Dam Height |
29 |
River Or Stream |
TRIB FLOUR CREEK |
Primary Dam Type |
Earth |
Nid Storage |
52 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
29 |
La Moine River At Colmar
|
67cfs |
La Moine River At Ripley
|
48cfs |
Bear Creek Near Marcelline
|
5cfs |
Spoon River At Seville
|
186cfs |
Wyaconda River Above Canton
|
13cfs |
Des Moines River At St. Francisville
|
1620cfs |