Heisler Creek Subwtrshd Sta 8+80 #3f-2 Reservoir Report
Last Updated: December 14, 2025
Heisler Creek Subwatershed Station 8+80 #3f-2 is a vital water resource infrastructure located in Woodbury County, Iowa.
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Summary
Managed by the local government and designed by USDA NRCS, this earth dam was completed in 1960 for multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a height of 25 feet and a length of 508 feet, this dam has a storage capacity of 25 acre-feet and serves a drainage area of 0.27 square miles.
The dam, situated along the TR-West Fork Little Sioux River, is regulated by the Iowa Department of Natural Resources and is inspected, permitted, and enforced by the state agency. Despite being rated as low hazard potential and not assessed for condition, this crucial infrastructure poses a moderate risk (3) and lacks updated emergency action plans and inundation maps. While it has not undergone modifications in recent years, the dam remains an essential component in the local water management system.
Overall, Heisler Creek Subwatershed Station 8+80 #3f-2 plays a significant role in water resource management in the region, providing essential services for fire protection, livestock, and flood risk reduction. With its strategic location and design features, the dam serves as a key structure in ensuring water security and environmental sustainability in Woodbury County. Efforts to enhance its risk management measures, update emergency protocols, and improve overall condition assessment could further strengthen its resilience and functionality in the face of changing climate patterns.
Year Completed |
1960 |
Dam Length |
508 |
Dam Height |
25 |
River Or Stream |
TR-WEST FORK LITTLE SIOUX RIV |
Primary Dam Type |
Earth |
Surface Area |
2.7 |
Drainage Area |
0.27 |
Nid Storage |
25 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
West Fork Ditch At Hornick
|
80cfs |
Missouri River At Sioux City
|
13700cfs |
Omaha Cr At Homer
|
45cfs |
Floyd River At James
|
187cfs |
Little Sioux River At Correctionville
|
327cfs |
South Omaha Creek At Walthill
|
11cfs |
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.
Heisler Creek Subwtrshd Sta 8+80 #3f-2