Gibson Lake Dam is a dam located in Harrison County, Missouri, built in 1985. It carries a Significant hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall, taller than 59% 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 Gibson Lake Dam
Gibson Lake Dam is a dam in Harrison, Missouri. The dam is private-owned. It impounds the East Fork Big Creek near Bethany.
The dam stands 27 feet tall, creates a reservoir covering 2 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 50 square miles. Completed in 1985, the structure is 41 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | Missouri |
| County | Harrison |
| Nearest City | Bethany |
| River/Stream | East Fork Big Creek |
| Coordinates | 40.36521, -93.99461 |
Physical Characteristics
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 35 acre-ft |
| Max Storage | 35 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 50 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO12305 |
| Federal ID | MO12305 |
| More Info | State Dam Safety Program |