Wenger Subwatershed Sta 32+00 #5 Reservoir Report
Last Updated: December 14, 2025
Wenger Subwatershed Sta 32+00 #5 is a key structure in Woodbury County, Iowa, designed by the USDA NRCS to serve multiple purposes including fire protection, stock, and small fish pond management, as well as flood risk reduction.
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Summary
Completed in 1965, this earth dam has a height of 28 feet and a length of 513 feet, providing a storage capacity of 86 acre-feet and covering a surface area of 4.5 acres. Situated along TR-REYNOLDS CREEK, this dam is regulated by the Iowa DNR and is inspected periodically to ensure its functionality and safety.
Despite being rated as having a low hazard potential, Wenger Subwatershed Sta 32+00 #5 is categorized as having a moderate risk level (3) due to its location and potential impact in case of failure. The structure has not been assessed for its condition and lacks an Emergency Action Plan (EAP) as well as updated contact information for emergency situations. While the dam has not been modified in recent years, it is important for local authorities to monitor and manage the risk associated with this structure to prevent any potential disasters and ensure its long-term functionality for water resource and climate management in the region.
Overall, Wenger Subwatershed Sta 32+00 #5 is a vital piece of infrastructure in Mapleton, Iowa, contributing to water resource management, flood risk reduction, and ecological conservation efforts in the area. As climate change continues to impact the frequency and intensity of extreme weather events, it is crucial for stakeholders to prioritize the maintenance and monitoring of such structures to safeguard the community and environment against potential disasters and ensure sustainable water resource management for future generations.
Year Completed |
1965 |
Dam Length |
513 |
Dam Height |
28 |
River Or Stream |
TR-REYNOLDS CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.5 |
Drainage Area |
0.39 |
Nid Storage |
86 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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 Sta 32+00 #5