Atha Dam Reservoir Report
Nearby: Hutchison Dam Ed's Lake A Dam
Last Updated: January 9, 2026
Located in Macon, Missouri, Atha Dam on Brush Creek is a privately owned earth dam primarily used for grade stabilization.
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Summary
Completed in 1995, this dam stands at 30 feet tall with a structural height of 27 feet and a length of 206 feet. It has a maximum storage capacity of 40 acre-feet and serves to control the flow of water in the area, with a low hazard potential and a moderate risk assessment score of 3.
With a spillway width of 20 feet and an uncontrolled spillway type, Atha Dam plays a crucial role in managing water levels and mitigating potential flooding risks in the region. The dam's drainage area covers 268.8 square miles, providing water resource and climate enthusiasts with an opportunity to study the impact of this infrastructure on the local ecosystem. Despite not being regulated by the state and lacking regular inspections, Atha Dam remains a key feature in the Rock Island District, showcasing the intersection of human engineering and natural resource management.
As one explores the details of Atha Dam, its significance in maintaining the stability of Brush Creek becomes apparent. While the dam's condition assessment is marked as "Not Rated," its purpose of grade stabilization underscores the importance of such structures in water management. With a focus on risk management and emergency preparedness, Atha Dam stands as a testament to the intricate balance between harnessing water resources for human benefit while respecting the natural environment.
Year Completed |
1995 |
Dam Length |
206 |
Dam Height |
30 |
River Or Stream |
BRUSH CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.5 |
Hydraulic Height |
25 |
Drainage Area |
268.8 |
Nid Storage |
40 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Atha Dam