Randall Rc&D #176 Reservoir Report

Last Updated: December 13, 2025

Randall Rc&D #176 is a local government-owned earth dam located in Gregory, South Dakota, along a tributary of the South Fork Whetstone Creek.


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Summary

Built in 1976 by the USDA NRCS, this dam stands at a height of 69 feet and has a storage capacity of 90 acre-feet, with a normal storage level of 71 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," this dam plays a crucial role in managing water resources in the area.

Managed by the South Dakota Department of Environment and Natural Resources, Randall Rc&D #176 is subject to state regulation, permitting, inspection, and enforcement. Its primary purpose and associated structures are not specified, but its location and design indicate a focus on water resource management and conservation. With a maximum discharge capacity of 625 cubic feet per second, this dam serves as a vital infrastructure for flood control and water supply in the region.

Despite its low hazard potential, Randall Rc&D #176 remains a valuable asset for the community, ensuring the safety and sustainability of water resources in Gregory, South Dakota. As climate change continues to impact water availability and quality, dams like this play a crucial role in mitigating risks and enhancing resilience in the face of evolving environmental challenges.

Year Completed

1976

Dam Length

316

Dam Height

69

River Or Stream

TRIB. S. FORK WHETSTONE CREEK

Primary Dam Type

Earth

Hydraulic Height

69

Drainage Area

1

Nid Storage

90

Hazard Potential

Low

Nid Height

69
       
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.