Lost Cr Pilot Watershed Dam D-6 Reservoir Report
Last Updated: December 18, 2025
Lost Cr Pilot Watershed Dam D-6, located in Lincoln, Missouri, is a privately owned earth dam built in 1958 primarily for flood risk reduction on TR-LOST CREEK.
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Summary
This dam stands at a height of 29 feet with a hydraulic height of 29 feet and a structural height of 31 feet. It has a length of 210 feet and a storage capacity of 166 acre-feet, serving a drainage area of 121.6 square miles.
Despite its low hazard potential and moderate risk assessment, Lost Cr Pilot Watershed Dam D-6 has not been rated for its condition assessment. The dam features an uncontrolled spillway with a width of 160 feet, and no outlet gates. While it has not undergone recent inspections, its emergency action plan (EAP) status and risk management measures remain unspecified. The dam's location in a private ownership setting and its lack of state regulation or enforcement suggest a need for increased monitoring and maintenance to ensure its continued effectiveness in flood risk mitigation.
Lost Cr Pilot Watershed Dam D-6 serves as a vital infrastructure asset in the region, playing a crucial role in managing floodwaters and protecting surrounding areas from potential inundation. With a focus on flood risk reduction, this dam underscores the importance of proactive maintenance and monitoring practices to uphold its structural integrity and safeguard against potential hazards. As the climate continues to change and extreme weather events become more frequent, the resilience and functionality of dams like Lost Cr Pilot Watershed Dam D-6 will be essential in ensuring the safety and security of communities in the face of evolving environmental challenges.
Year Completed |
1958 |
Dam Length |
210 |
Dam Height |
29 |
River Or Stream |
TR-LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
29 |
Drainage Area |
121.6 |
Nid Storage |
166 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cuivre River Near Troy
|
33cfs |
Macoupin Creek Near Kane
|
16cfs |
Dardenne Creek At Old Town St. Peters
|
11cfs |
Dardenne Creek At Ofallon
|
6cfs |
Missouri River At St. Charles
|
33100cfs |
Cowmire Creek At Bridgeton
|
1cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Lost Cr Pilot Watershed Dam D-6
South Harbor Road Lincoln County