Bacon Creek Watershed Site J-1 Reservoir Report

Last Updated: December 13, 2025

Located in Woodbury County, Iowa, the Bacon Creek Watershed Site J-1 is a key flood risk reduction structure managed by the local government.


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Summary

Designed by the USDA NRCS and regulated by the Iowa DNR, this earth dam stands at a height of 46 feet and was completed in 1984. With a drainage area of 0.38 square miles and a storage capacity of 126 acre-feet, this structure plays a crucial role in managing water flow and reducing flood risks in the region.

Situated along the TR-Floyd River, the Bacon Creek Watershed Site J-1 serves multiple purposes including fire protection, stock or small fish pond, and flood risk reduction. The dam has a normal storage capacity of 28 acre-feet and covers a surface area of 7.7 acres. Inspected in 2015 and deemed to be in satisfactory condition, this structure has a significant hazard potential and a moderate risk level. With its uncontrolled spillway and soil foundation, this site is an essential component of the water resource management infrastructure in the area.

Managed by the Natural Resources Conservation Service, the Bacon Creek Watershed Site J-1 is a vital asset for the community of Sioux City. With its strategic location and effective design, this earth dam plays a crucial role in safeguarding the region against flooding events. Climate enthusiasts and water resource experts can appreciate the significance of this structure in maintaining the ecological balance and ensuring the safety of the surrounding area.

Year Completed

1984

Dam Length

578

Dam Height

46

River Or Stream

TR- FLOYD RIVER

Primary Dam Type

Earth

Surface Area

7.7

Drainage Area

0.38

Nid Storage

126

Hazard Potential

Significant

Foundations

Soil

Nid Height

46
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.