Wolf Creek Subwatershed Site M-3 Reservoir Report
Last Updated: December 14, 2025
Wolf Creek Subwatershed Site M-3, located in Woodbury County, Iowa, is a crucial water resource managed by the local government and regulated by the Iowa Department of Natural Resources.
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Summary
The site, designed by USDA NRCS, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. Completed in 1971, the earth dam stands at a height of 29 feet with a length of 800 feet, providing a storage capacity of 270 acre-feet. The dam's low hazard potential and moderate risk assessment make it an essential component in managing water resources in the area.
With a drainage area of 2.88 square miles and a surface area of 16.2 acres, Wolf Creek Subwatershed Site M-3 plays a vital role in regulating water flow and reducing flood risks in the region. The dam, equipped with an uncontrolled spillway, ensures the safety of downstream areas in case of excess water. Despite being designated as "Not Rated" in terms of condition assessment, the site's operational capabilities and emergency response protocols are yet to be fully evaluated.
As a part of the Rock Island District, Wolf Creek Subwatershed Site M-3 remains a valuable asset for water management and conservation efforts in Iowa. Its strategic location, design features, and multi-purpose functionality make it a key infrastructure contributing to the overall sustainability and resilience of the local ecosystem. As climate change continues to impact water resources, the efficient operation and maintenance of sites like M-3 are crucial for ensuring water security and mitigating potential risks in the face of evolving environmental challenges.
Year Completed |
1971 |
Dam Length |
800 |
Dam Height |
29 |
River Or Stream |
TR-WOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
16.2 |
Drainage Area |
2.88 |
Nid Storage |
270 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Correctionville
|
327cfs |
West Fork Ditch At Hornick
|
80cfs |
Maple River At Mapleton
|
323cfs |
Floyd River At James
|
187cfs |
Missouri River At Sioux City
|
13700cfs |
Perry Creek Near Milnerville
|
25cfs |
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.
Wolf Creek Subwatershed Site M-3