East Fork Big Creek Dam Lt- 4 Reservoir Report
Last Updated: December 16, 2025
East Fork Big Creek Dam Lt-4 is a privately owned earth dam located in Harrison, Missouri, along the East Fork Big Creek.
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Summary
Constructed in 1984 by the USDA NRCS, this dam primarily serves the purpose of grade stabilization, standing at a height of 30 feet with a length of 200 feet. It has a storage capacity of 26 acre-feet and a surface area of 2 acres, with a moderate risk assessment rating due to its low hazard potential.
Despite being unregulated by the state, East Fork Big Creek Dam Lt-4 plays a crucial role in managing water resources and preventing erosion in the area. With a spillway width of 16 feet and a maximum discharge rate of 63 cubic feet per second, this dam ensures the safety and stability of the surrounding environment. Its location within the Rock Island District and proximity to the East Fork Big Creek make it an essential structure for water resource and climate enthusiasts to monitor and study for conservation efforts.
As a key component of the local watershed, East Fork Big Creek Dam Lt-4 showcases the importance of sustainable water management practices and the integration of natural resources conservation in dam construction. While currently rated as "Not Rated" for condition assessment, this dam serves as a valuable asset for the community in maintaining water quality and protecting against potential risks. For enthusiasts interested in water resource conservation and climate resilience, East Fork Big Creek Dam Lt-4 presents a fascinating case study in balancing infrastructure development with environmental stewardship.
Year Completed |
1984 |
Dam Length |
200 |
Dam Height |
30 |
River Or Stream |
EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
30 |
Drainage Area |
19.2 |
Nid Storage |
26 |
Structural Height |
32 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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 Fork Big Creek Dam Lt- 4