Lost Creek E-1 Reservoir Report
Last Updated: December 5, 2025
Lost Creek E-1, also known as Lost Creek Watershed Site E-1 Dam, is a local government-owned structure located in Seneca, Missouri.
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Summary
Built in 1977 by the USDA NRCS, this earth dam stands at a height of 46 feet and spans 735 feet in length, with a storage capacity of 200 acre-feet. Its primary purpose is flood risk reduction for the TR-Lost Creek watershed, covering a drainage area of 736 square miles.
The dam's spillway, an uncontrolled type with a width of 100 feet, ensures a maximum discharge of 442 cubic feet per second. Despite its high hazard potential, Lost Creek E-1 has been assessed as satisfactory in condition, last inspected in June 2016 with an inspection frequency of three years. While the risk assessment deems the dam to have a moderate risk level, with appropriate risk management measures, it continues to serve its intended function effectively, safeguarding the local community from potential flooding events.
With its strategic location and design, Lost Creek E-1 remains a vital component of the flood risk reduction infrastructure in Newton County, Missouri. Managed and regulated by the DAM AND RESERVOIR SAFETY PROG, this dam exemplifies the importance of proactive maintenance and inspection protocols to ensure the safety and efficiency of water resource management systems in the face of changing climate conditions.
Year Completed |
1977 |
Dam Length |
735 |
Dam Height |
46 |
River Or Stream |
TR-LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
736 |
Nid Storage |
200 |
Structural Height |
46 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
46 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Shoal Creek Above Joplin
|
151cfs |
Spring River Near Quapaw
|
455cfs |
Buffalo Creek At Tiff City
|
13cfs |
Tar Creek At 22nd Street Bridge
|
4cfs |
Elk River Near Tiff City
|
268cfs |
Indian Creek Near Lanagan
|
68cfs |
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 E-1