Francis Mashburn Dam
Francis Mashburn Dam is an earth dam located in Harrison County, Missouri, built in 2003. It carries a Low hazard potential classification.
About Francis Mashburn Dam
The primary purpose of Francis Mashburn Dam is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Francis Mashburn (private). It impounds the Tr-long Branch near Pattonsburg.
The dam stands 30 feet tall and stretches 380 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 31 acre-feet, and collects water from a drainage area of 185 square miles. Completed in 2003, 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 10/23/2003. That was over 22 years ago.
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Location
| State | Missouri |
| County | Harrison |
| Nearest City | Pattonsburg |
| River/Stream | Tr-long Branch |
| Coordinates | 40.39288, -94.17133 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 29 ft |
| Dam Length | 380 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 31 acre-ft |
| Max Storage | 31 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 185 sq mi |
| Max Discharge | 4 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | FRANCIS MASHBURN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 10/23/2003 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO51213 |
| Federal ID | MO51213 |
| More Info | State Dam Safety Program |