Lake Kearney Dam
Lake Kearney Dam is an earth dam located in Jefferson County, Missouri. It carries a High hazard potential classification.
About Lake Kearney Dam
The primary purpose of Lake Kearney Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Dave Kearney (private). It impounds the Tr To Sugar Creek near Arnold.
The dam stands 25 feet tall, creates a reservoir covering 4 acres, has a maximum storage capacity of 54 acre-feet, and collects water from a drainage area of 60 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. The most recent inspection on record was 09/09/1980. That was 45 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
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 | Jefferson |
| Nearest City | Arnold |
| River/Stream | Tr To Sugar Creek |
| Coordinates | 38.44624, -90.51376 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
Storage & Hydraulics
| NID Storage | 54 acre-ft |
| Max Storage | 54 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 60 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | DAVE KEARNEY |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 09/09/1980 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11099 |
| Federal ID | MO11099 |
| More Info | State Dam Safety Program |