Lost Cr Pilot Watershed Dam F-4 Reservoir Report

Last Updated: December 18, 2025

Lost Cr Pilot Watershed Dam F-4, located in Lincoln, Missouri, is a key infrastructure managed by the local government for flood risk reduction along the TR-LOST CREEK stream.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1958, this earth dam stands at a height of 29 feet and has a storage capacity of 255 acre-feet, serving a drainage area of 51.2 square miles. With a spillway width of 115 feet and a maximum discharge capacity of 5900 cubic feet per second, the dam plays a crucial role in managing floodwaters and protecting surrounding areas.

Despite its age, Lost Cr Pilot Watershed Dam F-4 is deemed to have a high hazard potential due to its condition assessment being "Not Rated". The last inspection was conducted in 1979, with an inspection frequency of 5 years. While the risk assessment indicates a moderate risk level, there is no documented risk management plan in place. The dam's emergency action plan status, inundation maps, and contact information for emergency situations are also not updated, raising concerns about its readiness in the face of potential disasters. As an enthusiast for water resources and climate, monitoring and advocating for the proper maintenance and management of this dam is essential to ensure the safety and resilience of the community it serves.

Year Completed

1958

Dam Length

610

Dam Height

29

River Or Stream

TR-LOST CREEK

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

29

Drainage Area

51.2

Nid Storage

255

Structural Height

31

Outlet Gates

None

Hazard Potential

High

Foundations

Soil

Nid Height

31
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.