Lost Creek Watershed Site A-1 Reservoir Report
Nearby: Limberlost Dam Lost Creek B-2
Last Updated: December 5, 2025
Lost Creek Watershed Site A-1, located in Newton County, Missouri, is a vital earth dam constructed in 1992 by the USDA NRCS with a primary purpose of flood risk reduction along the tributary of Little Lost Creek.
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Summary
The dam stands at 49 feet high and spans 1450 feet, providing a storage capacity of 367 acre-feet to mitigate potential flooding events in the area. With a drainage area of 6103 acres and a maximum discharge of 36,894 cubic feet per second, the dam plays a crucial role in protecting the surrounding community from high hazard potential.
This site, managed by local government authorities, is regulated, permitted, inspected, and enforced by the Missouri Dam and Reservoir Safety Program to ensure its structural integrity and operational effectiveness. The dam's spillway, with a width of 400 feet, is uncontrolled, and its outlet gates are equipped with a slide (sluice gate) mechanism. Despite being categorized with a moderate risk assessment, the condition assessment in 2007 deemed the dam to be in satisfactory condition, highlighting the ongoing efforts to maintain and monitor its safety and functionality.
Lost Creek Watershed Site A-1 serves as a critical infrastructure for flood control and water resource management in the region, showcasing the collaborative efforts between federal and state agencies to protect the community from potential risks and hazards. With a comprehensive risk management approach and regular inspections, this earth dam stands as a testament to the importance of proactive measures in safeguarding our water resources and mitigating the impacts of climate variability on our communities.
Year Completed |
1992 |
Dam Length |
1450 |
Dam Height |
49 |
River Or Stream |
TRIBUTARY, LITTLE LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
55 |
Drainage Area |
6103 |
Nid Storage |
367 |
Structural Height |
49 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
49 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Shoal Creek Above Joplin
|
151cfs |
Spring River Near Quapaw
|
455cfs |
Buffalo Creek At Tiff City
|
13cfs |
Elk River Near Tiff City
|
268cfs |
Tar Creek At 22nd Street Bridge
|
4cfs |
Spring River At Carthage
|
58cfs |
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 Watershed Site A-1