Fourche Creek #11
Fourche Creek #11 is an earth dam located in Ripley County, Missouri, built in 1985. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Fourche Creek #11
The primary purpose of Fourche Creek #11 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 Fourche Creek Watershed (local government). It impounds the Fourche Creek near Poynor.
The dam stands 45 feet tall and stretches 1,150 feet across, creates a reservoir covering 69 acres, has a maximum storage capacity of 567 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1985, the structure is 41 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/09/2021.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Missouri |
| County | Ripley |
| Nearest City | Poynor |
| River/Stream | Fourche Creek |
| Coordinates | 36.51123, -90.99576 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 1,150 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 567 acre-ft |
| Max Storage | 567 acre-ft |
| Normal Storage | 525 acre-ft |
| Surface Area | 69 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 11,702 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | FOURCHE CREEK WATERSHED |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/09/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO31860 |
| Federal ID | MO31860 |
| More Info | State Dam Safety Program |