South Hungerford 2 Watershed Site 4 Reservoir Report
Last Updated: December 14, 2025
South Hungerford 2 Watershed Site 4, located in Sioux City, Iowa, is a vital water resource managed by the local government and designed by USDA NRCS.
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Summary
This Earth dam, completed in 1965, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a height of 27 feet and a storage capacity of 70 acre-feet, this dam plays a crucial role in maintaining water supply and managing flood risk in the area.
Situated on the TR-Floyd River, this dam covers a surface area of 6.2 acres and has a drainage area of 0.27 square miles. Despite its low hazard potential, the dam's risk assessment is moderate (3), highlighting the importance of regular inspections and maintenance. While its condition is currently not rated, the dam is regulated and monitored by the Iowa Department of Natural Resources, ensuring its compliance with state regulations and safety standards.
South Hungerford 2 Watershed Site 4 is a key infrastructure for water management and climate resilience in Plymouth County, Iowa. Its strategic location and design by the Natural Resources Conservation Service make it a valuable asset for fire protection, flood control, and ecological conservation in the region. As climate change continues to impact water resources, this dam serves as a critical component in sustainable water management and disaster risk reduction efforts in the area.
Year Completed |
1965 |
Dam Length |
515 |
Dam Height |
27 |
River Or Stream |
TR-FLOYD RIVER |
Primary Dam Type |
Earth |
Surface Area |
6.2 |
Drainage Area |
0.27 |
Nid Storage |
70 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Floyd River At James
|
187cfs |
Perry Creek Near Milnerville
|
25cfs |
Missouri River At Sioux City
|
13700cfs |
Omaha Cr At Homer
|
45cfs |
Big Sioux River At Akron
|
816cfs |
Little Sioux River At Correctionville
|
327cfs |
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.
South Hungerford 2 Watershed Site 4