Grassy Creek Watershed Dam G- 50
Grassy Creek Watershed Dam G- 50 is an earth dam located in Lewis County, Missouri, built in 1990. It carries a Low hazard potential classification.
About Grassy Creek Watershed Dam G- 50
The primary purpose of Grassy Creek Watershed Dam G- 50 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 Ck Subdistrict (local government). It impounds the Little Troublesome near Lewistown.
The dam stands 27 feet tall and stretches 460 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 159 acre-feet, and collects water from a drainage area of 57 square miles. Completed in 1990, the structure is 36 years old.
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 09/11/1999. That was over 26 years ago.
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Location
| State | Missouri |
| County | Lewis |
| Nearest City | Lewistown |
| River/Stream | Little Troublesome |
| Coordinates | 40.02531, -91.79242 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 25 ft |
| Dam Length | 460 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 159 acre-ft |
| Max Storage | 159 acre-ft |
| Normal Storage | 38 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 57 sq mi |
| Max Discharge | 209 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | GRASSY CK SUBDISTRICT |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/11/1999 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50886 |
| Federal ID | MO50886 |
| More Info | State Dam Safety Program |