D. Trumble Reservoir Report
Nearby: W. Assmessen Sully Dam
Last Updated: December 7, 2025
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Summary
Trumble, located in Sully, South Dakota, is a privately owned earth dam on Okobojo Creek, completed in 1945 by the Natural Resources Conservation Service. Standing at a height of 12 feet with a length of 1630 feet, this dam has a storage capacity of 381 acre-feet and a maximum discharge of 8400 cubic feet per second. Despite its low hazard potential, the dam's condition has not been rated, and there is no information available on its inspection frequency or emergency action plan.
Water resource and climate enthusiasts will be intrigued by the historical significance of D. Trumble, as it plays a crucial role in water management in the region. The dam's presence on Okobojo Creek highlights the importance of inland waterways and their impact on the surrounding ecosystem and community. With a focus on sustainability and conservation, understanding the condition and functionality of dams like D. Trumble is essential for ensuring water resource management in the face of changing climate patterns.
While D. Trumble may not currently pose a high hazard, it serves as a reminder of the importance of regular inspection and maintenance of infrastructure in the face of potential climate-related risks. As climate change continues to impact water resources, the resilience of dams and other structures will be crucial in mitigating the effects of extreme weather events. This data on D. Trumble provides a glimpse into the intricate network of water infrastructure in South Dakota and the ongoing efforts to ensure its safety and efficiency in the face of a changing climate.
Year Completed |
1945 |
Dam Length |
1630 |
Dam Height |
12 |
River Or Stream |
OKOBOJO CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Nid Storage |
381 |
Hazard Potential |
Low |
Nid Height |
12 |
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.
D. Trumble