Upper Locust Creek W-183a Reservoir Report
Last Updated: December 20, 2025
Located in Sullivan, Missouri, Upper Locust Creek W-183a is a local government-owned dam designed by the USDA NRCS with a primary purpose of flood risk reduction.
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Summary
Completed in 2004, this earth dam stands at a height of 22 feet and spans 460 feet in length, with a maximum storage capacity of 66 acre-feet and a normal storage capacity of 19.4 acre-feet. The dam serves multiple purposes including fire protection, stock or small fish pond, fish and wildlife pond, in addition to flood risk reduction.
With a low hazard potential and a moderate risk assessment rating, Upper Locust Creek W-183a is equipped with an uncontrolled spillway and outlet gates. The dam, situated along the TR-LOCUST CREEK river/stream, covers a drainage area of 224 square miles and has a maximum discharge capacity of 112.5 cubic feet per second. Although the dam's condition assessment is currently not rated, it undergoes inspections every 5 years to ensure its structural integrity and functionality in mitigating flood risks for the surrounding area. As an essential infrastructure for the community, this dam plays a crucial role in water resource management and climate resilience efforts in the region.
Year Completed |
2004 |
Dam Length |
460 |
Dam Height |
22 |
River Or Stream |
TR-LOCUST CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
19 |
Drainage Area |
224 |
Nid Storage |
66 |
Structural Height |
27 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Medicine Creek Near Laredo
|
6cfs |
Thompson River At Trenton
|
111cfs |
Locust Creek Near Linneus
|
35cfs |
Chariton River At Novinger
|
48cfs |
Grand River At Chillicothe
|
361cfs |
Chariton River At Livonia
|
45cfs |
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.
Upper Locust Creek W-183a