Mccallie-South Lake Dam Reservoir Report
Last Updated: December 25, 2025
Mccallie-South Lake Dam, located in Lonoke, Arkansas, was completed in 1950 primarily for irrigation purposes.
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Summary
This private earth dam stands at 15 feet tall and spans 2800 feet in length, with a storage capacity of 170 acre-feet. Situated on the Wattensaw Bayou, this structure plays a crucial role in managing water resources in the area, providing irrigation water for agricultural activities in the region.
Despite its low hazard potential and current "Not Rated" condition assessment, Mccallie-South Lake Dam has not undergone recent inspections or assessments. The dam lacks a spillway and does not have associated structures or outlet gates. While it is not regulated by the state and has not been inspected for compliance or safety recently, its strategic location and purpose make it a key infrastructure for water resource management in the region. Enthusiasts interested in the intersection of water resources and climate change may find this dam's history and functionalities intriguing for further study and understanding of the local ecosystem.
As a non-USACE (U.S. Army Corps of Engineers) structure, Mccallie-South Lake Dam's operations, funding, design, and construction are all managed by private entities. With no state permitting, inspection, or enforcement activities in place, the responsibility for the maintenance and safety of this dam falls solely on its private owner. This unique aspect adds a layer of complexity to the management and regulation of water resources in the area, making Mccallie-South Lake Dam a fascinating subject for water resource and climate enthusiasts seeking to understand the intricate dynamics of private infrastructure in the broader context of water management.
Year Completed |
1950 |
Dam Length |
2800 |
Dam Height |
15 |
River Or Stream |
WATTENSAW BAYOU-TR-OS |
Primary Dam Type |
Earth |
Surface Area |
29.9 |
Hydraulic Height |
15 |
Drainage Area |
0.21 |
Nid Storage |
170 |
Structural Height |
15 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bayou Meto Near Lonoke
|
38cfs |
White River At Devalls Bluff
|
8100cfs |
White River At Georgetown
|
7280cfs |
Cache River Near Cotton Plant
|
26cfs |
White River Near Augusta
|
7190cfs |
Rock Creek At 36th Street At Little Rock
|
16cfs |
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.
Mccallie-South Lake Dam