Morse Mill Lake Dam
Morse Mill Lake Dam is an earth dam located in Jefferson County, Missouri, built in 2006. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Morse Mill Lake Dam
Morse Mill Lake Dam is a dam in Jefferson, Missouri. The dam is private-owned. It impounds the Unnamed Trib. To Big River near Morse Mill.
The dam stands 52 feet tall and stretches 650 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 582 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2006, the structure is relatively new.
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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 02/10/2022.
At 52 feet, this dam is taller than 93% of dams nationwide.
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 | Morse Mill |
| River/Stream | Unnamed Trib. To Big River |
| Coordinates | 38.27494, -90.63430 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 52 ft |
| Dam Height | 52 ft |
| Dam Length | 650 ft |
| Year Completed | 2006 (20 years old) |
Storage & Hydraulics
| NID Storage | 582 acre-ft |
| Max Storage | 582 acre-ft |
| Normal Storage | 485 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/10/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO40140 |
| Federal ID | MO40140 |
| More Info | State Dam Safety Program |