Mc Call Subwatershed Site 10-2 Reservoir Report
Last Updated: December 14, 2025
Mc Call Subwatershed Site 10-2 is a local government-owned structure located in Monona, Iowa, designed by USDA NRCS for multiple purposes including fire protection, stock, small fish pond, and flood risk reduction.
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Summary
This Earth-type dam, completed in 1963, stands at 36 feet tall and spans 425 feet in length, with a storage capacity of 82 acre-feet and a surface area of 3.8 acres. Situated along TR-GARD CREEK, this site plays a crucial role in water resource management within the region.
Despite being categorized as having a low hazard potential, Mc Call Subwatershed Site 10-2 is considered to have a moderate risk level according to the data, presenting some challenges that need to be addressed. With a condition assessment of "Not Rated" and limited information on emergency action plans and risk management measures, there is room for improvement in ensuring the safety and functionality of this dam. As climate change impacts water resources and infrastructure, it is essential to prioritize the maintenance and monitoring of structures like Mc Call Subwatershed Site 10-2 to mitigate potential risks and protect the surrounding environment and communities.
With the Iowa DNR overseeing state regulations and permitting for this site, collaborations between local government, state agencies, and the community are vital in enhancing the resilience of Mc Call Subwatershed Site 10-2. By conducting regular inspections, updating emergency action plans, and implementing risk management strategies, stakeholders can work together to safeguard this important water resource infrastructure against the evolving challenges posed by climate change and ensure its long-term sustainability for future generations of water resource and climate enthusiasts.
Year Completed |
1963 |
Dam Length |
425 |
Dam Height |
36 |
River Or Stream |
TR-GARD CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.8 |
Drainage Area |
0.5 |
Nid Storage |
82 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
West Fork Ditch At Hornick
|
80cfs |
Missouri River At Decatur
|
14900cfs |
Soldier River At Pisgah
|
112cfs |
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.
Mc Call Subwatershed Site 10-2