McGinnis Lake, located in Franklin County, Missouri, is a privately owned Earth dam completed in 1975 with a primary purpose of serving as a Fish and Wildlife Pond.
Wind
Humidity
The dam stands at a height of 27 feet with a hydraulic height of 26 feet, a structural height of 28 feet, and a length of 540 feet. It has a normal storage capacity of 78 acre-feet and a maximum storage capacity of 137 acre-feet, covering a surface area of 1 acre and draining a watershed area of 371.2 acres.
The dam's spillway, with a width of 12 feet, is of the uncontrolled type, and the overall hazard potential of the structure is rated as low. Despite being categorized as having a moderate risk level, the dam's condition is currently not rated, and it has not been assigned an Emergency Action Plan (EAP) or undergone recent inspections. With its location in the St. Louis District and along the TR-ST JOHNS CREEK, McGinnis Lake offers recreational opportunities and supports fire protection, stock, and small fish pond purposes in addition to its primary function in wildlife conservation.
While McGinnis Lake Dam presents a valuable resource for the local ecosystem and community in terms of water storage, habitat preservation, and recreational activities, its maintenance and safety protocols may benefit from further assessment and monitoring to ensure its long-term viability and resilience in the face of potential hazards and climate variability. Water resource and climate enthusiasts may find this dam a fascinating subject for study and engagement in sustainable water management practices and environmental stewardship efforts within the region.
Year Completed |
1975 |
Dam Length |
540 |
Dam Height |
27 |
River Or Stream |
TR-ST JOHNS CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
26 |
Drainage Area |
371.2 |
Nid Storage |
137 |
Structural Height |
28 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Bourbeuse River At Union
|
110cfs |
Meramec River Near Sullivan
|
437cfs |
Missouri River At Hermann
|
31200cfs |
Meramec River At Pacific
|
676cfs |
Bonhomme Creek Near Ellisville
|
0cfs |
Big River At Byrnesville
|
204cfs |