Des Arc Bayou Wid Site 3 Reservoir Report

Last Updated: December 5, 2025

Des Arc Bayou Wid Site 3, also known as Lake Barnett, is a state-owned recreational water resource located in Harmony, Arkansas.


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Summary

This site was designed by the USDA NRCS and is regulated by the Arkansas Natural Resources Commission (ANRC). The dam, completed in 1979, is an earth core type with a height of 128 feet and a length of 1150 feet, providing a storage capacity of 25425 acre-feet and a surface area of 245 acres.

With a drainage area of 38.6 square miles, Des Arc Bayou Wid Site 3 has a significant hazard potential but its risk assessment is moderate. The dam features an uncontrolled spillway and outlet gates, with a maximum discharge capacity of 850 cubic feet per second. Despite not being rated for condition assessment, the site undergoes regular state inspections and enforcement to ensure public safety and regulatory compliance. For water resource and climate enthusiasts, this site offers a fascinating example of state-managed water infrastructure in a picturesque natural setting.

Year Completed

1979

Dam Length

1150

Dam Height

128

River Or Stream

DES ARC BAYOU

Primary Dam Type

Earth

Surface Area

245

Drainage Area

38.6

Nid Storage

25425

Outlet Gates

Uncontrolled

Hazard Potential

Significant

Nid Height

128
       
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.