Lost Creek #2 Reservoir Report
Last Updated: December 18, 2025
Lost Creek #2, also known as Lost Creek Watershed Site #2 Dam, is a local government-owned structure located in Lincoln, Missouri.
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Summary
Built in 1957, this Earth dam stands at a height of 44 feet and spans a length of 760 feet, providing flood risk reduction for the TR-LOST CREEK river or stream. With a storage capacity of 675 acre-feet and a drainage area of 1056 square miles, Lost Creek #2 plays a crucial role in managing water resources in the area.
Despite being classified as having a high hazard potential, Lost Creek #2 is in satisfactory condition, as of the last assessment in 2007. Regular inspections are conducted every 2 years to ensure the dam's structural integrity and safety. The dam features an uncontrolled spillway with a width of 120 feet, and although it has not been modified in recent years, it continues to effectively serve its primary purpose of flood risk reduction. The risk assessment for Lost Creek #2 indicates a moderate level of risk, emphasizing the importance of ongoing monitoring and maintenance to mitigate potential hazards and ensure the safety of nearby communities.
Lost Creek #2 is a vital component of the local water resource infrastructure, providing essential flood risk reduction for the surrounding area. As climate change continues to impact weather patterns and increase the frequency of extreme events, structures like Lost Creek #2 become increasingly important in safeguarding communities from potential flooding. With a commitment to regular inspections and maintenance, this dam serves as a crucial asset in managing water resources and mitigating risks associated with changing climate conditions in Missouri.
Year Completed |
1957 |
Dam Length |
760 |
Dam Height |
44 |
River Or Stream |
TR-LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
1056 |
Nid Storage |
675 |
Structural Height |
44 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
44 |
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 Creek #2
South Harbor Road Lincoln County