Dunn Lake Dam
Dunn Lake Dam is an earth dam located in Warren County, Missouri, built in 1970. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Dunn Lake Dam
The primary purpose of Dunn 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 Mildred Dunn (private). It impounds the Tr Hickory Lick Creek near Warrenton.
The dam stands 38 feet tall and stretches 490 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 115 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 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. 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 11/17/2022.
At 38 feet, this dam is taller than 85% 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 | Warren |
| Nearest City | Warrenton |
| River/Stream | Tr Hickory Lick Creek |
| Coordinates | 38.85439, -91.10158 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 490 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 115 acre-ft |
| Max Storage | 115 acre-ft |
| Normal Storage | 93 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | MILDRED DUNN |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/17/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO10760 |
| Federal ID | MO10760 |
| More Info | State Dam Safety Program |