Blue Cloud Abbey Dam #2 Reservoir Report
Last Updated: December 14, 2025
Blue Cloud Abbey Dam #2 is a private earth dam located in Grant, South Dakota, along the TR WHETSTONE RIVER.
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Summary
Built in 1978, this dam stands at a height of 40 feet with a hydraulic height of 28 feet, providing a maximum storage capacity of 50 acre-feet. Despite its low hazard potential and current "Not Rated" condition assessment, the dam is subject to regulation and inspection by the state regulatory agency, DENR, ensuring its safety and compliance with state permitting and enforcement measures.
This dam plays a crucial role in water resource management and flood control within the region, with a maximum discharge capacity of 1625 cubic feet per second. While specific purposes and associated structures are not detailed, Blue Cloud Abbey Dam #2 contributes to the overall infrastructure for water supply and environmental conservation in the area. The dam's location in a private ownership setting underscores the importance of private investment and stewardship in maintaining vital water resources amid changing climate conditions.
As water resource and climate enthusiasts continue to monitor the impact of dams on ecosystems and communities, Blue Cloud Abbey Dam #2 stands as a testament to the ongoing maintenance and regulation required for sustainable water management. With its completion date, design specifications, and operational details outlined, this dam serves as a focal point for understanding the intersection of human infrastructure and natural water systems in the face of evolving environmental challenges.
Year Completed |
1978 |
Dam Length |
330 |
Dam Height |
40 |
River Or Stream |
TR WHETSTONE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
50 |
Hazard Potential |
Low |
Nid Height |
40 |
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.
Blue Cloud Abbey Dam #2