Lake Thunderbird Upper Dam
Lake Thunderbird Upper Dam is an earth dam located in Callaway County, Missouri, built in 1967. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Thunderbird Upper Dam
The primary purpose of Lake Thunderbird Upper Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Thunderbird Inc (private). It impounds the Tr Auxvasse Creek near Chamois.
The dam stands 49 feet tall and stretches 430 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 465 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1967, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 01/22/2020.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Missouri |
| County | Callaway |
| Nearest City | Chamois |
| River/Stream | Tr Auxvasse Creek |
| Coordinates | 38.80243, -91.80924 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 430 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 465 acre-ft |
| Max Storage | 465 acre-ft |
| Normal Storage | 465 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 165 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE THUNDERBIRD INC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/22/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MO10988 |
| Federal ID | MO10988 |
| More Info | State Dam Safety Program |