West Fork #3 Subwtrshd Sta 8+15 #6 Reservoir Report
Last Updated: December 13, 2025
West Fork #3 Subwatershed Station 8+15 #6 is a vital water resource infrastructure located in Woodbury, Iowa.
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Summary
Managed by the Iowa Department of Natural Resources, this earth dam was completed in 1961 for purposes such as fire protection, stock, small fish pond, and flood risk reduction. With a height of 45 feet and a storage capacity of 36 acre-feet, this dam covers a drainage area of 0.24 square miles and has a surface area of 1.3 acres.
Despite its low hazard potential, this dam does not have a condition rating and has not been inspected or assessed recently. The spillway type is uncontrolled, and there are no outlet gates or associated structures. The risk assessment for this dam is moderate, with a DSAC assigned date and no specific risk management measures outlined at this time. Located in the Omaha District, this water infrastructure serves a crucial role in managing water resources in the region.
Overall, West Fork #3 Subwatershed Station 8+15 #6 is an important earth dam designed by the USDA NRCS to protect against flooding, provide water for fire protection, and support local wildlife. As water resource and climate enthusiasts, it is essential to monitor and maintain the infrastructure to ensure its continued effectiveness in managing the local watershed. With its location in Woodbury, Iowa, this dam plays a significant role in safeguarding the surrounding community and environment against potential water-related risks.
Year Completed |
1961 |
Dam Length |
246 |
Dam Height |
45 |
River Or Stream |
TR-WEST FORK LITTLE SIOUX RIV |
Primary Dam Type |
Earth |
Surface Area |
1.3 |
Drainage Area |
0.24 |
Nid Storage |
36 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Floyd River At James
|
187cfs |
Missouri River At Sioux City
|
15100cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River At Correctionville
|
327cfs |
Perry Creek Near Milnerville
|
25cfs |
Omaha Cr At Homer
|
45cfs |
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.
West Fork #3 Subwtrshd Sta 8+15 #6