Rock Creek Branch Dam is an earth dam located in Knox County, Missouri, built in 1974. It carries a Significant hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 550 ft long, taller than 55% 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 Rock Creek Branch Dam
The primary purpose of Rock Creek Branch Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Richard Barnes (private). It impounds the Tr-rock Creek near Hannibal.
The dam stands 26 feet tall and stretches 550 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 87 acre-feet, and collects water from a drainage area of 44 square miles. Completed in 1974, the structure is well into its service life at over 50 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 | Knox |
| Nearest City | Hannibal |
| River/Stream | Tr-rock Creek |
| Coordinates | 40.14944, -92.25528 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 25 ft |
| Dam Length | 550 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 87 acre-ft |
| Max Storage | 87 acre-ft |
| Normal Storage | 54 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 44 sq mi |
| Max Discharge | 981 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Richard Barnes |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11560 |
| Federal ID | MO11560 |
| More Info | State Dam Safety Program |