Duck Creek Dam No.2 Reservoir Report

Last Updated: December 6, 2025

Duck Creek Dam No.2, located in Fall River, South Dakota, is a privately owned earth dam completed in 1955 with a height of 21 feet and a length of 550 feet.


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Summary

The dam, situated on a tributary of the Cheyenne River, has a storage capacity of 67 acre-feet and is regulated by the South Dakota Department of Environment and Natural Resources (DENR). The dam has a significant hazard potential and is currently not rated in terms of condition assessment.

Despite being a private structure, Duck Creek Dam No.2 plays a crucial role in water resource management and flood control in the region. With a maximum discharge capacity of 1260 cubic feet per second, the dam helps mitigate the risk of flooding events in the surrounding area. Additionally, its normal storage capacity of 54 acre-feet provides important water supply benefits for local communities and ecosystems.

Although specific details about inspections, emergency action plans, and risk assessments are not available for Duck Creek Dam No.2, its presence as a key infrastructure asset in the region underscores the importance of ongoing monitoring and maintenance to ensure the safety and reliability of the dam in the face of changing climate conditions and water resource challenges. As climate enthusiasts and water resource advocates, staying informed about the state of dams like Duck Creek Dam No.2 is crucial for understanding and addressing the complex interplay between water infrastructure, climate resilience, and environmental sustainability.

Year Completed

1955

Dam Length

550

Dam Height

21

River Or Stream

TRIBUTARY OF CHEYENNE RIVER

Primary Dam Type

Earth

Hydraulic Height

21

Nid Storage

67

Hazard Potential

Significant

Nid Height

21
       
Seasonal Comparison

Weather Forecast

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.