Mc Cormick Dam Reservoir Report
Nearby: Volk Dam Greubel Dam
Last Updated: December 8, 2025
Mc Cormick Dam, located in Marion, Iowa, was completed in 2001 and serves multiple purposes including fire protection and creating a stock or small fish pond.
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Summary
Managed by a private owner, the dam is regulated by the Iowa Department of Natural Resources and meets state permitting, inspection, and enforcement requirements. The dam's primary type is earth, with a height of 33 feet and a length of 483 feet, providing a storage capacity of 104 acre-feet and covering a surface area of 6.4 acres.
Situated on TR- Coon Creek in the Red Rock Reservoir area, Mc Cormick Dam has a low hazard potential and a moderate risk assessment rating of 3. The dam features an uncontrolled spillway type and is primarily constructed with soil foundations. Although the dam has not been rated for its condition assessment, it is regularly inspected and meets state regulatory guidelines. The surrounding area offers a picturesque landscape with opportunities for water resource and climate enthusiasts to explore the dam's ecological impact and conservation efforts.
Overall, Mc Cormick Dam plays a vital role in water resource management in the region, providing essential services for fire protection and wildlife habitat enhancement. With its strategic location and efficient design, the dam stands as a testament to responsible dam construction and sustainable water use practices. For those interested in the intersection of water resources and climate resilience, Mc Cormick Dam offers a compelling case study for the importance of proper dam maintenance and monitoring in safeguarding both the environment and local communities.
Year Completed |
2001 |
Dam Length |
483 |
Dam Height |
33 |
River Or Stream |
TR- COON CREEK |
Primary Dam Type |
Earth |
Surface Area |
6.4 |
Drainage Area |
0.26 |
Nid Storage |
104 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
White Breast Creek Near Dallas
|
5cfs |
South River Near Ackworth
|
18cfs |
English Creek Near Knoxville
|
2cfs |
Middle River Near Indianola
|
48cfs |
Des Moines River Near Pella
|
2080cfs |
North River Near Norwalk
|
48cfs |
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.
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