Bacon Creek Watershed Site L-1 Reservoir Report
Last Updated: December 13, 2025
Bacon Creek Watershed Site L-1 in Plymouth County, Iowa, is a flood risk reduction structure designed by the USDA NRCS and completed in 1976.
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Summary
This earth dam, standing at a height of 53 feet and a length of 322 feet, serves the primary purpose of flood risk reduction along the TR-Floyd River. With a storage capacity of 49 acre-feet and a drainage area of 0.27 square miles, this low-hazard potential structure plays a crucial role in protecting the surrounding area from potential flooding events.
Managed by the local government and regulated by the Iowa Department of Natural Resources, Bacon Creek Watershed Site L-1 is equipped with an uncontrolled spillway and has a surface area of 3 acres. Despite its moderate risk assessment rating, the dam is not currently rated for its condition and does not have an emergency action plan prepared. The structure has not been modified since its completion and does not have any associated locks or outlet gates. As a key component of the flood risk reduction infrastructure in the area, this site plays a vital role in mitigating the impacts of potential flooding events along the TR-Floyd River.
Located near Sioux City, Bacon Creek Watershed Site L-1 is situated in a strategic position to provide fire protection, stock watering, and small fish pond benefits in addition to its primary flood risk reduction function. With its historic completion in 1976 by the Natural Resources Conservation Service, this structure continues to serve the community by managing water resources and contributing to climate resilience in the region.
Year Completed |
1976 |
Dam Length |
322 |
Dam Height |
53 |
River Or Stream |
TR-FLOYD RIVER |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.27 |
Nid Storage |
49 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
53 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Floyd River At James
|
187cfs |
Missouri River At Sioux City
|
15100cfs |
Perry Creek Near Milnerville
|
25cfs |
Omaha Cr At Homer
|
45cfs |
Big Sioux River At Akron
|
816cfs |
West Fork Ditch At Hornick
|
80cfs |
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.
Bacon Creek Watershed Site L-1
Bacon Creek Sioux City