Mccoy Dam Reservoir Report
Last Updated: December 12, 2025
Mccoy Dam, located in Missouri City, Missouri, is a private earth dam that was completed in 1956 for the primary purpose of recreation.
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Summary
The dam stands at a height of 18 feet and has a storage capacity of 96 acre-feet, with a normal storage of 30 acre-feet. It is situated on the TR-DRY CREEK river or stream, within Clay County, Missouri.
Despite its low hazard potential, Mccoy Dam has not been rated for its condition assessment. The dam does not fall under state jurisdiction, regulation, permitting, inspection, or enforcement. It also does not have an Emergency Action Plan (EAP) in place, although its risk assessment and management measures are currently unspecified. This lack of regulatory oversight and emergency preparedness raises concerns for water resource and climate enthusiasts, especially given the dam's location in an area with a drainage area of 312 square miles.
The data on Mccoy Dam suggests a need for further evaluation of its safety and emergency readiness, particularly in light of its recreational use and potential impact on the surrounding community. With its location in a high-drainage area and limited regulatory oversight, water resource and climate enthusiasts may want to monitor developments related to the dam and advocate for improved safety measures to protect both the environment and the public.
Year Completed |
1956 |
Dam Height |
18 |
River Or Stream |
TR-DRY CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
312 |
Nid Storage |
96 |
Structural Height |
18 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
18 |
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.
Mccoy Dam
Clay County