Grassy Creek Watershed Dam G-88, located in Ewing, Missouri, was completed in 1994 and serves primarily for flood risk reduction.
Wind
Humidity
Managed by the local government, the dam is designed by USDA NRCS and stands at a height of 29 feet with a length of 480 feet. The dam has a storage capacity of 98 acre-feet and a drainage area of 153.6 square miles, with a maximum discharge rate of 135.2 cubic feet per second.
The dam's spillway type is uncontrolled with a width of 22 feet, and it has a low hazard potential with a moderate risk assessment rating of 3. Despite being in operation for over two decades, the dam's condition assessment is currently not rated, with the last inspection conducted in September 1999. The dam does not have an Emergency Action Plan (EAP) prepared, and there are no inundation maps available for potential risk assessment.
Grassy Creek Watershed Dam G-88 plays a crucial role in mitigating flood risks in the area, protecting local communities and infrastructure from potential water-related disasters. With its strategic location and design, the dam continues to be a vital asset in managing water resources and climate-related challenges in the Lewis County region of Missouri.
Year Completed |
1994 |
Dam Length |
480 |
Dam Height |
23 |
River Or Stream |
GRASSY CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
23 |
Drainage Area |
153.6 |
Nid Storage |
98 |
Structural Height |
29 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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 |