Whitworth Lake Dam Reservoir Report
Nearby: Lake Brown Dam Horne Lake Dam
Last Updated: December 25, 2025
Whitworth Lake Dam, located in Grant County, Arkansas, was completed in 1948 with a primary purpose of recreation.
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Summary
The dam stands at a structural height of 18 feet and has a hydraulic height of 15 feet, providing a storage capacity of 69 acre-feet. While the dam is primarily used for recreation, it also serves as a water supply source for the surrounding area. With its low hazard potential and "Not Rated" condition assessment, Whitworth Lake Dam is a reliable structure that enhances the natural beauty of the Big Creek-OS river and provides valuable water resources for the community.
Situated in the picturesque city of Sheridan, Whitworth Lake Dam offers visitors a tranquil setting for outdoor activities such as fishing, boating, and picnicking. The dam's earth structure spans 1340 feet and is regulated by the Arkansas state jurisdiction. While not currently subject to state inspection or regulation, the dam's maintenance and safety are still closely monitored to ensure its continued functionality and integrity. With its serene surroundings and essential water supply function, Whitworth Lake Dam is a vital resource for both recreational enthusiasts and local residents in Grant County, contributing to the region's overall water management and conservation efforts.
Managed by private owners, Whitworth Lake Dam's strategic location in the Little Rock District underlines its significance as a key water resource in the state of Arkansas. The dam's normal storage capacity of 42 acre-feet and maximum storage of 69 acre-feet make it a valuable asset for water supply and recreational purposes. While the dam's hazard potential is classified as low and its condition assessment remains unrated, ongoing measures are in place to ensure the safety and structural integrity of Whitworth Lake Dam for the benefit of all who rely on its essential services.
Year Completed |
1948 |
Dam Length |
1340 |
River Or Stream |
BIG CREEK-OS |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
69 |
Structural Height |
18 |
Hazard Potential |
Low |
Nid Height |
18 |
Seasonal Comparison
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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.
Whitworth Lake Dam