Lake Montowese Dam, located in Times Beach, Missouri, is a privately owned structure with a primary purpose of recreation.
Wind
Humidity
Completed in 1942, this earth dam stands at a height of 54 feet and spans 1000 feet in length. With a storage capacity of 800 acre-feet and a surface area of 48 acres, the dam serves as a popular spot for outdoor activities in the Jefferson County area.
Despite its age, Lake Montowese Dam has been well-maintained and is in satisfactory condition according to a 2007 assessment. With a high hazard potential due to its location on TR Big River and a moderate risk assessment rating, the dam is inspected every two years to ensure public safety. Although there are no associated structures or outlet gates, the uncontrolled spillway with a width of 58 feet helps to manage a maximum discharge of 1740 cubic feet per second.
For water resource and climate enthusiasts, Lake Montowese Dam presents an intriguing case study of a privately owned recreational structure in Missouri. With its historical significance dating back to the early 20th century and its ongoing regulatory oversight by the Dam and Reservoir Safety Program, this dam serves as a vital component of the local ecosystem while providing opportunities for outdoor enjoyment. As climate change continues to impact water resources, the management and maintenance of dams like Lake Montowese will be crucial in ensuring the resilience and safety of communities in the face of evolving environmental challenges.
Year Completed |
1942 |
Dam Length |
1000 |
Dam Height |
54 |
River Or Stream |
TR BIG RIVER |
Primary Dam Type |
Earth |
Surface Area |
48 |
Drainage Area |
500 |
Nid Storage |
800 |
Structural Height |
54 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
54 |
Meramec River Near Eureka
|
1200cfs |
Big River At Byrnesville
|
213cfs |
Williams Creek Near Peerless Park
|
1cfs |
Kiefer Creek Near Ballwin
|
2cfs |
Fenton Creek Near Fenton
|
2cfs |
Fishpot Creek At Valley Park
|
0cfs |