Grindstaff Dam Reservoir Report
Nearby: Mcminn Lake #2 Dam Mcminn Lake #1 Dam
Last Updated: December 6, 2025
Grindstaff Dam, located in Patton, Missouri, is a privately-owned structure primarily used for fire protection, stock, and small fish pond purposes.
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Summary
Completed in 1968, this earth-type dam stands at a height of 15 feet and has a storage capacity of 88 acre-feet. With a normal storage capacity of 48 acre-feet, the dam covers a surface area of 11 acres and serves a drainage area of 160 square miles along the TR-Little Whitewater River.
Managed by the St. Louis District of the US Army Corps of Engineers, Grindstaff Dam has a low hazard potential and is currently classified as "Not Rated" in terms of its condition assessment. Despite not being regulated by the state or requiring inspections, the dam has yet to undergo a comprehensive risk assessment or emergency action plan preparation. The dam's proximity to residential areas underscores the importance of monitoring and maintaining its structural integrity to ensure the safety of the surrounding community and water resources.
For water resource and climate enthusiasts, Grindstaff Dam offers a fascinating insight into the intersection of human intervention and natural ecosystems. As a vital component of the local landscape, this dam not only provides essential services for fire protection and agricultural activities but also presents challenges in terms of risk management and emergency preparedness. Understanding the history and current condition of Grindstaff Dam can shed light on the broader implications of dam construction and maintenance in ensuring sustainable water resource management in the face of changing climate patterns.
Year Completed |
1968 |
Dam Height |
15 |
River Or Stream |
TR-LITTLE WHITEWATER RIVER |
Primary Dam Type |
Earth |
Surface Area |
11 |
Drainage Area |
160 |
Nid Storage |
88 |
Structural Height |
15 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
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.
Grindstaff Dam
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