Lost Creek Watershed Dam F-1 is an earth dam located in Newton County, Missouri, built in 1977. It carries a High hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 450 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 Creek Watershed Dam F-1
The primary purpose of Lost Creek Watershed Dam F-1 is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Lost Creek Wrsd Subdist (local government). It impounds the Tr-lost Creek near Seneca.
The dam stands 33 feet tall and stretches 450 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 64 acre-feet, and collects water from a drainage area of 89 square miles. Completed in 1977, the structure is 49 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 05/29/1980. That was 46 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
At 33 feet, this dam is taller than 76% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Missouri dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Missouri |
| County | Newton |
| Nearest City | Seneca |
| River/Stream | Tr-lost Creek |
| Coordinates | 36.86285, -94.60406 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 31 ft |
| Dam Length | 450 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 64 acre-ft |
| Max Storage | 64 acre-ft |
| Normal Storage | 9 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 89 sq mi |
| Max Discharge | 1,384 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Lost Creek Wrsd Subdist |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Last Inspection | 05/29/1980 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO20512 |
| Federal ID | MO20512 |
| More Info | State Dam Safety Program |