Cressy Number 2 Reservoir Report
Nearby: Cressy Number 3 Cressy Number 1
Last Updated: December 8, 2025
Cressy Number 2 is a privately owned earth dam located in Jones, South Dakota, along the TR-BAD River.
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Summary
Built in 1959 by the Natural Resources Conservation Service, this dam stands at a height of 27 feet and has a length of 588 feet, providing a maximum storage capacity of 51 acre-feet. Despite its low hazard potential, the dam is regulated by the South Dakota Department of Environment and Natural Resources, with regular inspections and enforcement measures in place to ensure its safety and compliance with state regulations.
Situated within the St. Paul District of the US Army Corps of Engineers, Cressy Number 2 plays a crucial role in water resource management by providing flood control and water storage benefits to the surrounding area. Although the dam's condition assessment is currently marked as "Not Rated", it remains a key infrastructure for the region's water supply and environmental protection. With a normal storage capacity of 30 acre-feet and a maximum discharge rate of 1827 cubic feet per second, the dam serves as a vital piece of the local water management system.
As climate change continues to impact water resources and infrastructure across the globe, the importance of maintaining and monitoring structures like Cressy Number 2 becomes increasingly crucial. Through ongoing risk assessments, emergency action planning, and regular inspections, stakeholders can ensure the resilience and safety of this dam in the face of changing climate conditions. By staying proactive and prepared, the community can safeguard its water resources for future generations and adapt to the challenges posed by a shifting climate landscape.
Year Completed |
1959 |
Dam Length |
588 |
Dam Height |
27 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Nid Storage |
51 |
Hazard Potential |
Low |
Nid Height |
27 |
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.
Cressy Number 2