Riley Lake Dam
Riley Lake Dam is an earth dam located in Randolph County, Missouri, built in 1944. It carries a High hazard potential classification.
About Riley Lake Dam
The primary purpose of Riley Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Floyd Riley (private). It impounds the Tr-east Fork Chariton River near Callao.
The dam stands 25 feet tall, creates a reservoir covering 17 acres, has a maximum storage capacity of 227 acre-feet, and collects water from a drainage area of 235 square miles. Completed in 1944, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Missouri dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Missouri |
| County | Randolph |
| Nearest City | Callao |
| River/Stream | Tr-east Fork Chariton River |
| Coordinates | 39.55127, -92.56274 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Year Completed | 1944 (82 years old) |
Storage & Hydraulics
| NID Storage | 227 acre-ft |
| Max Storage | 227 acre-ft |
| Normal Storage | 127 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 235 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | FLOYD RILEY |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10629 |
| Federal ID | MO10629 |
| More Info | State Dam Safety Program |