Wyaconda City Dam is an earth dam located in Clark County, Missouri, built in 1977. It carries a High hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Wyaconda City Dam
The primary purpose of Wyaconda City 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 Wyaconda (local government). It impounds the Tr-south Wyaconda River near Medill.
The dam stands 32 feet tall, creates a reservoir covering 7 acres, has a maximum storage capacity of 120 acre-feet, and collects water from a drainage area of 200 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. The most recent inspection on record was 10/05/1978. That was 48 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 | Clark |
| Nearest City | Medill |
| River/Stream | Tr-south Wyaconda River |
| Coordinates | 40.39922, -91.90698 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 200 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Wyaconda |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Last Inspection | 10/05/1978 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10009 |
| Federal ID | MO10009 |
| More Info | State Dam Safety Program |