Grassy Creek Watershed Dam G- 85, located in Lewis County, Missouri, serves as a vital flood risk reduction structure along the Little Grassy River.
Wind
Humidity
Built in 1990 by the USDA NRCS, this earth dam stands at a height of 31 feet and has a storage capacity of 125 acre-feet, providing protection to the surrounding area from potential flooding events. Despite its low hazard potential and moderate risk assessment, the dam has not been rated for its condition as of yet.
With a spillway width of 30 feet and a maximum discharge capacity of 252 cubic feet per second, Grassy Creek Watershed Dam G- 85 is equipped to handle excess water flow during heavy rainfall events. The dam's primary purpose remains focused on flood risk reduction, with a structural height of 34 feet and a length of 434 feet. Although the dam has not undergone recent inspections or condition assessments, it continues to play a crucial role in safeguarding the community of Ewing and its residents from potential flooding disasters along the Little Grassy River.
Year Completed |
1990 |
Dam Length |
434 |
Dam Height |
31 |
River Or Stream |
LITTLE GRASSY |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
31 |
Drainage Area |
172.8 |
Nid Storage |
125 |
Structural Height |
34 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
South Fabius River Near Taylor
|
12cfs |
Wyaconda River Above Canton
|
13cfs |
North River At Palmyra
|
21cfs |
Salt River Near Shelbina
|
30cfs |
Bear Creek Near Marcelline
|
5cfs |
Bear Creek At Hannibal
|
2cfs |