Lost Cr Pilot Watershed Dam B-4 is an earth dam located in Lincoln County, Missouri, built in 1958. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 370 ft long, taller than 68% 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 Lost Cr Pilot Watershed Dam B-4
The primary purpose of Lost Cr Pilot Watershed Dam B-4 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 George Segress (local government). It impounds the Tr-lost Creek near Elsberry.
The dam stands 30 feet tall and stretches 370 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 54 acre-feet, and collects water from a drainage area of 371 square miles. Completed in 1958, 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 | Lincoln |
| Nearest City | Elsberry |
| River/Stream | Tr-lost Creek |
| Coordinates | 39.16156, -90.82612 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 28 ft |
| Dam Length | 370 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 54 acre-ft |
| Max Storage | 54 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 371 sq mi |
| Max Discharge | 3,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | George Segress |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO12110 |
| Federal ID | MO12110 |
| More Info | State Dam Safety Program |