Grassy Creek Watershed Dam G- 57
Grassy Creek Watershed Dam G- 57 is an earth dam located in Lewis County, Missouri, built in 2005. It carries a Low hazard potential classification.
About Grassy Creek Watershed Dam G- 57
The primary purpose of Grassy Creek Watershed Dam G- 57 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Grassy Creek Ws District (local government). It impounds the Grassy Creek near Lewistown.
The dam stands 34 feet tall and stretches 445 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 160 acre-feet, and collects water from a drainage area of 147 square miles. Completed in 2005, the structure is relatively new.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 05/01/2005. That was over 20 years ago.
At 34 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Missouri |
| County | Lewis |
| Nearest City | Lewistown |
| River/Stream | Grassy Creek |
| Coordinates | 40.06429, -91.80601 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 27 ft |
| Dam Length | 445 ft |
| Year Completed | 2005 (21 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 147 sq mi |
| Max Discharge | 219 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | GRASSY CREEK WS DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 05/01/2005 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO51351 |
| Federal ID | MO51351 |
| More Info | State Dam Safety Program |