Bynum Lake Dam Reservoir Report
Last Updated: December 5, 2025
Bynum Lake Dam, located in Drew County, Arkansas, was completed in 1964 and is primarily used for recreation purposes.
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Summary
The dam, designed by the USDA NRCS, is an earth-type structure standing at 20 feet in height with a hydraulic height of 18 feet. It impounds Cut-Off Creek-TR and has a maximum storage capacity of 63 acre-feet.
Despite being privately owned and not regulated by the state, Bynum Lake Dam has a low hazard potential and a moderate risk assessment rating. The dam features an uncontrolled spillway and has a maximum discharge capacity of 552 cubic feet per second. With a condition assessment of "Not Rated", the dam's emergency action plan (EAP) status and risk management measures are currently unknown.
Water resource and climate enthusiasts interested in Bynum Lake Dam will be intrigued by its historical significance and recreational value. The dam, with its picturesque location and functional design, presents an interesting case study for understanding the management and risk assessment of small, privately-owned dams in the United States.
Year Completed |
1964 |
Dam Length |
295 |
Dam Height |
20 |
River Or Stream |
CUT-OFF CREEK-TR |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
63 |
Structural Height |
20 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bayou Bartholomew Near Mcgehee
|
243cfs |
Bayou Bartholomew Near Portland
|
380cfs |
Bayou Bartholomew At Garrett Bridge
|
154cfs |
Saline River Near Rye
|
428cfs |
Bayou Macon At Eudora
|
48cfs |
Bayou Bartholomew Near Jones
|
322cfs |
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.
Bynum Lake Dam