West Fork Big Creek Dam B- 70 is an earth dam located in Harrison County, Missouri, built in 2005. It carries a Low hazard potential classification.
Dam profile
NID height · 45 ft45 ft tall and 600 ft long, taller than 90% 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- 70
The primary purpose of West Fork Big Creek Dam B- 70 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 West Fork Big Creek near Bethany.
The dam stands 45 feet tall and stretches 600 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 64 acre-feet, and collects water from a drainage area of 120 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.
At 45 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | Missouri |
| County | Harrison |
| Nearest City | Bethany |
| River/Stream | West Fork Big Creek |
| Coordinates | 40.51740, -94.06620 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 26 ft |
| Dam Length | 600 ft |
| Year Completed | 2005 (21 years old) |
Storage & Hydraulics
| NID Storage | 64 acre-ft |
| Max Storage | 64 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 120 sq mi |
| Max Discharge | 139 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 | MO51386 |
| Federal ID | MO51386 |
| More Info | State Dam Safety Program |