Haskins Number 1 Reservoir Report
Nearby: Louis Caldwell Oahe Dam
Last Updated: December 6, 2025
Haskins Number 1 is a private earth dam located in Fort Pierre, South Dakota, along Branch Willow Creek.
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Summary
Constructed in 1935 by the Natural Resources Conservation Service, this dam stands at a height of 17 feet and has a storage capacity of 120 acre-feet. With a significant hazard potential and a condition assessment of "Not Rated", Haskins Number 1 plays a crucial role in water resource management in the region.
Despite being regulated by the South Dakota Department of Environment and Natural Resources, Haskins Number 1 lacks certain critical information such as inspection dates, emergency action plans, and risk assessment details. The dam's maximum discharge capacity is recorded at 1560 cubic feet per second, emphasizing the need for regular maintenance and monitoring to ensure the safety of downstream communities and the surrounding ecosystem. Its location in Stanley County, near the city of Fort Pierre, highlights the importance of this structure in mitigating flood risks and supporting agricultural activities in the area.
As a key component in the local water infrastructure, Haskins Number 1 serves as a critical water management tool for the region. With its historical significance and essential role in regulating water flow along Branch Willow Creek, continued oversight and maintenance of this dam are essential for ensuring both water resource sustainability and climate resilience in South Dakota.
Year Completed |
1935 |
Dam Length |
870 |
Dam Height |
17 |
River Or Stream |
BRANCH WILLOW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
120 |
Hazard Potential |
Significant |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Haskins Number 1