Located in Richwoods, Missouri, the Minnetonka Lake Dam stands as a rockfill structure with a height of 74 feet and a length spanning 1100 feet.
Wind
Humidity
Completed in 1957, this dam primarily serves the purpose of tailings management, with a storage capacity of 2500 acre-feet for the surrounding 320-acre drainage area. The dam, regulated by the DAM AND RESERVOIR SAFETY PROGRAM in Missouri, is designed to control the flow of the TRIB-DITCH CREEK, showcasing a high hazard potential but maintaining a satisfactory condition assessment as of December 2007.
With a maximum discharge capacity of 2300 cfs, the Minnetonka Lake Dam is equipped with an uncontrolled spillway and lacks outlet gates. Despite its high hazard potential, the dam's risk assessment is deemed moderate, with a history of regular inspections and a satisfactory emergency action plan. However, the last inspection in October 2016 and the condition assessment date in December 2007 highlight the need for continuous monitoring and maintenance to ensure the safety and efficiency of this vital water resource infrastructure in Washington County, Missouri.
Year Completed |
1957 |
Dam Length |
1100 |
Dam Height |
74 |
River Or Stream |
TRIB-DITCH CREEK |
Primary Dam Type |
Rockfill |
Surface Area |
90 |
Hydraulic Height |
71 |
Drainage Area |
320 |
Nid Storage |
2500 |
Structural Height |
74 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
74 |
Big River Near Richwoods
|
221cfs |
Meramec River Near Sullivan
|
522cfs |
Big River At Byrnesville
|
241cfs |
Meramec River At Pacific
|
786cfs |
Bourbeuse River At Union
|
107cfs |
Big River At Irondale
|
27cfs |