Sadler Lake Dam is an earth dam located in St. Charles County, Missouri, built in 1972. It carries a Significant hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 600 ft long, taller than 50% 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 Sadler Lake Dam
The primary purpose of Sadler Lake Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Larry Sadler (private). It impounds the Tr-sehrt Creek near Augusta.
The dam stands 25 feet tall and stretches 600 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 195 acre-feet, and collects water from a drainage area of 44 square miles. Completed in 1972, 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.
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Location
| State | Missouri |
| County | St. Charles |
| Nearest City | Augusta |
| River/Stream | Tr-sehrt Creek |
| Coordinates | 38.59524, -90.89684 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 600 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 195 acre-ft |
| Max Storage | 195 acre-ft |
| Normal Storage | 120 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 44 sq mi |
| Max Discharge | 154 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Larry Sadler |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30291 |
| Federal ID | MO30291 |
| More Info | State Dam Safety Program |