Simmons Lake Dam
Simmons Lake Dam is an earth dam located in Caldwell County, Missouri, built in 1977. It carries a High hazard potential classification.
About Simmons Lake Dam
The primary purpose of Simmons Lake Dam 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 D D Simmons (private). It impounds the Tub Creek near Dawn.
The dam stands 30 feet tall, creates a reservoir covering 55 acres, has a maximum storage capacity of 883 acre-feet, and collects water from a drainage area of 716 square miles. Completed in 1977, the structure is 49 years old.
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 | Caldwell |
| Nearest City | Dawn |
| River/Stream | Tub Creek |
| Coordinates | 39.62648, -94.12396 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 883 acre-ft |
| Max Storage | 883 acre-ft |
| Normal Storage | 440 acre-ft |
| Surface Area | 55 acres |
| Drainage Area | 716 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | D D SIMMONS |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11012 |
| Federal ID | MO11012 |
| More Info | State Dam Safety Program |