Wolf Creek Subwatershed Site 5-2 Reservoir Report
Last Updated: December 14, 2025
Wolf Creek Subwatershed Site 5-2 is a vital water resource located in Woodbury County, Iowa, managed by the local government with assistance from the USDA NRCS.
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Summary
This earth dam, completed in 1971, serves multiple purposes including fire protection, stock watering, and small fish pond creation, as well as flood risk reduction. With a dam height of 31 feet and a storage capacity of 172 acre-feet, this structure plays a crucial role in managing water resources in the area.
Despite its low hazard potential, the dam at Wolf Creek Subwatershed Site 5-2 is regulated by the Iowa DNR and undergoes regular state inspection, enforcement, and permitting processes to ensure the safety of the surrounding community. With a drainage area of 2 square miles and a surface area of 9.8 acres, this dam provides essential water storage and flood control functions. The risk assessment for this site is moderate, indicating a need for ongoing monitoring and risk management measures.
Located in the Rock Island District, Wolf Creek Subwatershed Site 5-2 is a key component of the local water infrastructure, serving as a critical resource for both water supply and flood protection. With its multiple purposes and state-regulated status, this site highlights the importance of sustainable water management practices in the face of changing climate conditions. Enthusiasts of water resources and climate resilience will find this site to be a fascinating example of how infrastructure can play a crucial role in mitigating water-related risks and supporting community resilience.
Year Completed |
1971 |
Dam Length |
814 |
Dam Height |
31 |
River Or Stream |
TR-WOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
9.8 |
Drainage Area |
2 |
Nid Storage |
172 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
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 5-2