Area 7 Section 4 Reservoir Report

Last Updated: December 5, 2025

Area 7 Section 4, located in Jefferson County, Arkansas, is a Federal-owned earth dam designed by the US Army Corps of Engineers with a primary purpose of flood risk reduction along the tributary of the Arkansas River.


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Summary

Completed in 1988, this dam stands at a height of 27 feet and has a hydraulic height of 20 feet, providing a maximum storage capacity of 144 acre-feet and a normal storage of 72 acre-feet. With a controlled spillway width of 30 feet, the dam has a low hazard potential and a very high risk assessment rating.

Despite its age, the condition assessment of Area 7 Section 4 is currently listed as "Not Available", and the last inspection date was in July 2019. The dam is equipped with slide gates for outlet control and has an inspection frequency of 4 years. While an Emergency Action Plan (EAP) was prepared in the past, its last revision date was in 2007. Although the risk assessment indicates a very high risk level, specific risk management measures and a detailed risk characterization summary are not available at this time. Overall, Area 7 Section 4 serves as a crucial infrastructure for flood risk mitigation in the region, highlighting the importance of regular maintenance and monitoring to ensure its effectiveness and safety.

Year Completed

1988

Dam Length

432

Dam Height

27

River Or Stream

Trib Of Arkansas

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

20

Drainage Area

1

Nid Storage

144

Structural Height

27

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.