Lost Cr Pilot Watershed Dam G-1 is an earth dam located in Lincoln County, Missouri, built in 1961. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 1,170 ft long, taller than 76% 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 G-1
The primary purpose of Lost Cr Pilot Watershed Dam G-1 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 Hugh Steavenson Trust (local government). It impounds the Union Creek near Elsberry.
The dam stands 33 feet tall and stretches 1,170 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 313 acre-feet, and collects water from a drainage area of 64 square miles. Completed in 1961, 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.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Missouri |
| County | Lincoln |
| Nearest City | Elsberry |
| River/Stream | Union Creek |
| Coordinates | 39.14029, -90.79322 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 31 ft |
| Dam Length | 1,170 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 313 acre-ft |
| Max Storage | 313 acre-ft |
| Normal Storage | 73 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 64 sq mi |
| Max Discharge | 1,570 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Hugh Steavenson Trust |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10445 |
| Federal ID | MO10445 |
| More Info | State Dam Safety Program |