Vandalia Lake Dam
Vandalia Lake Dam is an arch dam located in Pike County, Missouri, built in 1960. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Vandalia Lake Dam
The primary purpose of Vandalia 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 Vandalia (local government). It impounds the Tr-south Spencer Creek near Vandalia.
The dam stands 45 feet tall and stretches 320 feet across, creates a reservoir covering 35 acres, has a maximum storage capacity of 789 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1960, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 02/08/2023.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Missouri |
| County | Pike |
| Nearest City | Vandalia |
| River/Stream | Tr-south Spencer Creek |
| Coordinates | 39.37772, -91.40836 |
Physical Characteristics
| Dam Type | Arch |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 320 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 789 acre-ft |
| Max Storage | 789 acre-ft |
| Normal Storage | 431 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 8,239 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF VANDALIA |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/08/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO10540 |
| Federal ID | MO10540 |
| More Info | State Dam Safety Program |