Mc Call Subwatershed Site 10-3 Reservoir Report
Last Updated: December 14, 2025
Mc Call Subwatershed Site 10-3 is a local government-owned dam located in Monona, Iowa, specifically in the city of Turin.
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Summary
Built in 1963 by the USDA NRCS, this earth dam serves multiple purposes including fire protection, stock use, and small fish pond management. With a height of 25 feet and a length of 828 feet, the dam has a storage capacity of 96 acre-feet and covers a surface area of 5.3 acres.
Managed by the Iowa DNR, Mc Call Subwatershed Site 10-3 is regulated, permitted, inspected, and enforced by the state agency. Although the dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment, a moderate risk level of 3 has been identified, prompting the need for risk management measures. While the last inspection took place in October 1964, further evaluation and monitoring may be necessary to ensure the safety and functionality of the dam for both water resource and climate enthusiasts in the area.
Located along the TR-GARD CREEK within the Omaha District, Mc Call Subwatershed Site 10-3 plays a crucial role in flood risk reduction for the surrounding area. As a key water management structure, this dam serves as a vital component of the local ecosystem, providing essential water storage and flood protection benefits. With the potential for further modifications and improvements, this site offers a unique opportunity for stakeholders to collaborate on sustainable water resource management practices in the region.
Year Completed |
1963 |
Dam Length |
828 |
Dam Height |
25 |
River Or Stream |
TR-GARD CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.3 |
Drainage Area |
1.2 |
Nid Storage |
96 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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 10-3