Wenger Subwatershed M 130+73 Reservoir Report
Last Updated: December 14, 2025
The Wenger Subwatershed M 130+73 is a locally owned earth dam in Woodbury County, Iowa, designed by the USDA NRCS and regulated by the Iowa DNR.
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Summary
Completed in 1965, this dam serves multiple purposes including fire protection, stock watering, small fish pond, and flood risk reduction. With a height of 30 feet and a length of 642 feet, it has a storage capacity of 181 acre-feet and covers a surface area of 10 acres. The dam is located on the TR-REYNOLDS CREEK and is inspected by state authorities for safety and regulatory compliance.
Despite being classified as having a low hazard potential, the Wenger Subwatershed M 130+73 is considered to have a moderate risk level (3) due to its condition assessment being not rated. The dam has not been modified in recent years and does not have emergency action plans (EAP) in place. While the dam meets regulatory guidelines, there are no specific risk management measures identified for this structure at this time. As climate change continues to impact water resources and infrastructure, monitoring and maintenance of dams like Wenger Subwatershed M 130+73 will be crucial for ensuring the safety and resilience of communities in the region.
Overall, the Wenger Subwatershed M 130+73 plays a vital role in water management in Woodbury County, Iowa, providing essential services while also posing a moderate risk level that requires continued attention and monitoring. As water resource and climate enthusiasts, it is important to recognize the significance of infrastructure like this dam in maintaining the balance between water supply, flood control, and ecosystem health. Collaboration between local, state, and federal agencies will be essential in ensuring the long-term sustainability and safety of Wenger Subwatershed M 130+73 and other similar structures in the region.
Year Completed |
1965 |
Dam Length |
642 |
Dam Height |
30 |
River Or Stream |
TR-REYNOLDS CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
2.27 |
Nid Storage |
181 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River At Correctionville
|
327cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Missouri River At Decatur
|
14900cfs |
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.
Wenger Subwatershed M 130+73