Neustrom Subwatershed Site M-5 Reservoir Report
Last Updated: December 14, 2025
Neustrom Subwatershed Site M-5, located in Woodbury County, Iowa, is a local government-owned earth dam completed in 1971 by the USDA NRCS.
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Summary
This dam, situated on TR-Wolf Creek, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a dam height of 39 feet and a length of 626 feet, it has a storage capacity of 371 acre-feet and a surface area of 14.2 acres, serving a drainage area of 2.98 square miles.
Despite its low hazard potential, the dam's risk assessment indicates moderate risk (3), highlighting the importance of ongoing monitoring and maintenance. The dam is regulated by the Iowa DNR and undergoes state inspection, permitting, and enforcement to ensure its safety and functionality. While the condition assessment is currently unrated, the dam's emergency action plan (EAP) status and risk management measures are not specified, indicating a potential area for improvement in emergency preparedness and response.
Neustrom Subwatershed Site M-5 stands as a vital infrastructure for water resource management in the region, providing critical flood risk reduction and water storage capabilities. With its location in an area prone to climate fluctuations, it serves as a key component in the local watershed system, requiring ongoing oversight and maintenance to ensure its resilience against potential hazards and risks.
Year Completed |
1971 |
Dam Length |
626 |
Dam Height |
39 |
River Or Stream |
TR-WOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
14.2 |
Drainage Area |
2.98 |
Nid Storage |
371 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
39 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Correctionville
|
327cfs |
West Fork Ditch At Hornick
|
80cfs |
Floyd River At James
|
187cfs |
Maple River At Mapleton
|
323cfs |
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.
Neustrom Subwatershed Site M-5