Hendricks Number 1 Reservoir Report
Nearby: Hendricks Number 2 Hendricks Number 3
Last Updated: December 13, 2025
Hendricks Number 1 is a privately owned dam located in Jones, South Dakota, along the TR-White River.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1958, this earth-type dam stands at a height of 22 feet and spans 540 feet in length. With a maximum storage capacity of 156 acre-feet and a normal storage capacity of 125 acre-feet, the dam plays a crucial role in managing water resources in the area. The dam has a low hazard potential and has not been rated for its condition assessment.
Managed by the Natural Resources Conservation Service, Hendricks Number 1 is regulated, permitted, inspected, and enforced by the South Dakota Department of Environment and Natural Resources (DENR). While the dam has not been modified in recent years, it is equipped with outlet gates and has a maximum discharge capacity of 2100 cubic feet per second. Although the dam's emergency action plan (EAP) status and risk assessment details are currently unavailable, its location and design are essential to understanding water resource management and climate resilience in the region.
Overall, Hendricks Number 1 serves as a significant infrastructure for water resource management in South Dakota, contributing to flood control and water storage needs along the TR-White River. As a privately owned dam with state jurisdiction and regulation, its role in ensuring water safety and security for the surrounding community is crucial. With its low hazard potential and unassessed condition, continued monitoring and maintenance of Hendricks Number 1 are essential to safeguarding the local environment and mitigating potential risks associated with its operation.
Year Completed |
1958 |
Dam Length |
540 |
Dam Height |
22 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
156 |
Hazard Potential |
Low |
Nid Height |
22 |
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.
Hendricks Number 1