Big Whiskey 1 Subwatershed Site 3-1 Reservoir Report
Last Updated: December 14, 2025
Big Whiskey 1 Subwatershed Site 3-1 in Woodbury County, Iowa, is a significant earth dam completed in 1968 for fire protection, stock, and small fish pond purposes.
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Summary
Managed by the local government and designed by USDA NRCS, this dam stands at a height of 38 feet and spans a length of 679 feet, with a storage capacity of 52 acre-feet. The dam sits on the TR-WHISKEY CREEK, within the jurisdiction of the Iowa Department of Natural Resources, and is regulated, permitted, inspected, and enforced by state authorities.
With a drainage area of 0.35 square miles and a surface area of 3.1 acres, Big Whiskey 1 Subwatershed Site 3-1 poses a moderate risk (rating of 3) in terms of potential hazards, although its condition is currently not rated. The dam's hazard potential is deemed significant, warranting attention to risk management measures in the future. While it lacks an emergency action plan and updated contact information, the dam's purpose extends to flood risk reduction, making it a vital structure for water resource management in the region. Enthusiasts of water resources and climate will find this site's data intriguing, highlighting the intersection of infrastructure, regulatory oversight, and environmental protection.
Year Completed |
1968 |
Dam Length |
679 |
Dam Height |
38 |
River Or Stream |
TR-WHISKEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.1 |
Drainage Area |
0.35 |
Nid Storage |
52 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River At Correctionville
|
327cfs |
Maple River At Mapleton
|
323cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Floyd River At James
|
187cfs |
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.
Big Whiskey 1 Subwatershed Site 3-1