Macon Lake Dam
Macon Lake Dam is an earth dam located in Macon County, Missouri, built in 1927. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Macon Lake Dam
The primary purpose of Macon Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Macon (local government). It impounds the Duck Creek near Macon.
The dam stands 42 feet tall and stretches 1,200 feet across, creates a reservoir covering 205 acres, has a maximum storage capacity of 2,250 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1927, 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. 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 09/17/2020.
At 42 feet, this dam is taller than 89% 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 | Macon |
| Nearest City | Macon |
| River/Stream | Duck Creek |
| Coordinates | 39.74786, -92.49418 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 42 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 2,250 acre-ft |
| Max Storage | 2,250 acre-ft |
| Normal Storage | 2,250 acre-ft |
| Surface Area | 205 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 6,350 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF MACON |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/17/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO10153 |
| Federal ID | MO10153 |
| More Info | State Dam Safety Program |