Thompson Lake Dam
Thompson Lake Dam is an earth dam located in St. Charles County, Missouri, built in 1969. It carries a Low hazard potential classification.
About Thompson Lake Dam
The primary purpose of Thompson Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Florence Thompson (private). It impounds the Tr Sams Creek near Wentzville.
The dam stands 30 feet tall, creates a reservoir covering 10 acres, has a maximum storage capacity of 160 acre-feet, and collects water from a drainage area of 80 square miles. Completed in 1969, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Missouri |
| County | St. Charles |
| Nearest City | Wentzville |
| River/Stream | Tr Sams Creek |
| Coordinates | 38.77258, -90.92486 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 80 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | FLORENCE THOMPSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10486 |
| Federal ID | MO10486 |
| More Info | State Dam Safety Program |