West Fork Big Creek Dam B-146 is an earth dam located in Harrison County, Missouri, built in 1991. It carries a Low hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall and 330 ft long, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About West Fork Big Creek Dam B-146
The primary purpose of West Fork Big Creek Dam B-146 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 West Fork Big Creek Watershed (local government). It impounds the Tr-west Fork Big Creek near Pattonsburg.
The dam stands 32 feet tall and stretches 330 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 56 acre-feet, and collects water from a drainage area of 340 square miles. Completed in 1991, the structure is 35 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.
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Location
| State | Missouri |
| County | Harrison |
| Nearest City | Pattonsburg |
| River/Stream | Tr-west Fork Big Creek |
| Coordinates | 40.18623, -94.09056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 330 ft |
| Year Completed | 1991 (35 years old) |
Storage & Hydraulics
| NID Storage | 56 acre-ft |
| Max Storage | 56 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 340 sq mi |
| Max Discharge | 312 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | West Fork Big Creek Watershed |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50085 |
| Federal ID | MO50085 |
| More Info | State Dam Safety Program |