East Fork Big Creek Dam A- 33
East Fork Big Creek Dam A- 33 is an earth dam located in Harrison County, Missouri, built in 1962. It carries a Low hazard potential classification.
About East Fork Big Creek Dam A- 33
The primary purpose of East Fork Big Creek Dam A- 33 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 Harrison County Swcd (local government). It impounds the East Fork Big Creek near Bethany.
The dam stands 21 feet tall and stretches 365 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 230 square miles. Completed in 1962, the structure is well into its service life at over 50 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 | Bethany |
| River/Stream | East Fork Big Creek |
| Coordinates | 40.40997, -93.98418 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 19 ft |
| Dam Length | 365 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 21 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 230 sq mi |
| Max Discharge | 100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | HARRISON COUNTY SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO51280 |
| Federal ID | MO51280 |
| More Info | State Dam Safety Program |