East Locust Creek Watershed Dam E-40 Reservoir Report
Last Updated: December 16, 2025
East Locust Creek Watershed Dam E-40, located in Sullivan, Missouri, was completed in 1999 with a primary purpose of flood risk reduction along the TR-East Fork Locust stream.
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Summary
Designed by USDA NRCS, this earth dam stands at a height of 23.8 feet and has a hydraulic height of 21 feet, providing a maximum storage capacity of 74 acre-feet. With a low hazard potential and a moderate risk assessment rating, this dam plays a crucial role in managing water resources in the area.
Owned by the local government, East Locust Creek Watershed Dam E-40 is not regulated by the state and has not been inspected since its completion in 1999. The dam features an uncontrolled spillway with a width of 30 feet and no outlet gates. Despite its condition being marked as "Not Rated," the dam continues to serve its purpose effectively in reducing flood risks and protecting the surrounding community.
Although East Locust Creek Watershed Dam E-40 is not maintained by the US Army Corps of Engineers, its design and construction by the Natural Resources Conservation Service highlight the collaborative efforts in water resource management. With a drainage area of 108.8 square miles and a normal storage capacity of 38 acre-feet, this dam contributes significantly to the overall water management strategies in the region, making it a vital structure for climate and water resource enthusiasts to study and appreciate.
Year Completed |
1999 |
Dam Length |
524 |
Dam Height |
23.8 |
River Or Stream |
TR-EAST FORK LOCUST |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
21 |
Drainage Area |
108.8 |
Nid Storage |
74 |
Structural Height |
35 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Fox River At Bloomfield
|
7cfs |
Salt River At Hagers Grove
|
1cfs |
Des Moines River At Ottumwa
|
1090cfs |
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.
East Locust Creek Watershed Dam E-40