Olson Ranches Inc. #5 Reservoir Report
Last Updated: December 6, 2025
Olson Ranches INC.
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Summary
#5 is a privately owned dam located in Jones, South Dakota, along the TR-BAD RIVER. Constructed in 1959, this Earth-type dam stands at 31 feet tall with a length of 328 feet, providing a storage capacity of 48 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and is subject to state permitting, inspection, and enforcement requirements.
Despite its low hazard potential and current "Not Rated" condition assessment, Olson Ranches INC. #5 plays a crucial role in water resource management in the region. The dam has a maximum discharge capacity of 945 cubic feet per second and a normal storage level of 34 acre-feet. While the dam has not been modified in recent years and lacks an Emergency Action Plan (EAP), it remains an essential infrastructure for flood control and water supply purposes.
Owned and operated by Olson Ranches INC., this dam is overseen by the Natural Resources Conservation Service for design and construction. With its strategic location along the TR-BAD RIVER, Olson Ranches INC. #5 contributes to the overall water management efforts in the area, ensuring the safety and sustainability of water resources for both agricultural and environmental purposes.
Year Completed |
1959 |
Dam Length |
328 |
Dam Height |
31 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
31 |
Nid Storage |
48 |
Hazard Potential |
Low |
Nid Height |
31 |
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.
Olson Ranches Inc. #5