Westhoff Lake Dam
Westhoff Lake Dam is an earth dam located in Lincoln County, Missouri, built in 1974. It carries a Significant hazard potential classification.
About Westhoff Lake Dam
The primary purpose of Westhoff Lake Dam is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Leonard Westhoff,jr. (private). It impounds the Tr-bobs Creek.
The dam stands 19 feet tall and stretches 750 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 73 acre-feet, and collects water from a drainage area of 250 square miles. Completed in 1974, 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. The most recent inspection on record was 04/21/1980. That was over 45 years ago.
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Location
| State | Missouri |
| County | Lincoln |
| Nearest City | None |
| River/Stream | Tr-bobs Creek |
| Coordinates | 38.98011, -90.74856 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 750 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 73 acre-ft |
| Max Storage | 73 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 250 sq mi |
| Max Discharge | 167 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | LEONARD WESTHOFF,JR. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 04/21/1980 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO11140 |
| Federal ID | MO11140 |
| More Info | State Dam Safety Program |