O'hara Lake Dam
O'hara Lake Dam is an earth dam located in Randolph County, Missouri. It carries a High hazard potential classification.
About O'hara Lake Dam
O'hara Lake Dam is a dam in Randolph, Missouri. The dam is owned by Rex O'hara (private). It impounds the Tr-coon Creek near Middle Grove.
The dam stands 25 feet tall, creates a reservoir covering 15 acres, has a maximum storage capacity of 201 acre-feet, and collects water from a drainage area of 153 square miles.
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 | Middle Grove |
| River/Stream | Tr-coon Creek |
| Coordinates | 39.41894, -92.39682 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
Storage & Hydraulics
| NID Storage | 201 acre-ft |
| Max Storage | 201 acre-ft |
| Normal Storage | 125 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 153 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | REX O'HARA |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11179 |
| Federal ID | MO11179 |
| More Info | State Dam Safety Program |