Cooper Creek Wid Site 4 Reservoir Report
Last Updated: December 5, 2025
Cooper Creek Wid Site 4 is a local government-owned earth dam in Smithville, Arkansas, designed by the USDA NRCS.
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Summary
The dam, completed in 1969, stands at a height of 50 feet and spans a length of 3485 feet, with a storage capacity of 2922 acre-feet and a normal storage of 91 acre-feet. It serves the primary purpose of flood risk reduction on Machine Creek, a tributary in Lawrence County, Arkansas.
With a high hazard potential and a moderate risk assessment rating, Cooper Creek Wid Site 4 is a significant infrastructure for managing flood risk in the area. The dam features an uncontrolled spillway and outlet gates, with a maximum discharge capacity of 5088 cubic feet per second. While the dam's condition assessment is currently listed as "Not Rated," it is under state regulation and inspection, ensuring its continued safety and functionality for the surrounding community.
Water resource and climate enthusiasts will appreciate the vital role that Cooper Creek Wid Site 4 plays in flood risk reduction in the region. Its strategic location and design by the USDA NRCS highlight the importance of sustainable water management practices in mitigating the impact of extreme weather events on local communities. As a key structure in the watershed, this dam serves as a crucial component of the area's resilience against flooding and underscores the need for ongoing maintenance and monitoring to ensure its long-term effectiveness in protecting the surrounding area from potential water-related hazards.
Year Completed |
1969 |
Dam Length |
3485 |
Dam Height |
50 |
River Or Stream |
MACHINE CREEK |
Primary Dam Type |
Earth |
Surface Area |
18 |
Hydraulic Height |
50 |
Drainage Area |
4.8 |
Nid Storage |
2922 |
Structural Height |
50 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Nid Height |
50 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Spring River At Imboden
|
558cfs |
Black River At Black Rock
|
4290cfs |
Spring River At Town Branch Bridge At Hardy
|
401cfs |
Elevenpoint River Near Ravenden Springs
|
644cfs |
Black River At Pocahontas
|
3110cfs |
Black River At Elgin Ferry
|
3780cfs |
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.
Cooper Creek Wid Site 4