Dalhke Number 7 Reservoir Report
Nearby: Magnuson Number 1 Chambliss Number 3
Last Updated: December 13, 2025
Dalhke Number 7 is a privately owned earth dam located in Jones, South Dakota, along the TRIB-BAD RIVER.
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Summary
Constructed in 1956, this dam stands at a height of 25 feet and has a storage capacity of 54 acre-feet, with a normal storage level of 32 acre-feet. Despite being state-regulated and inspected, its hazard potential is considered low, and its condition assessment is currently not rated.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Dalhke Number 7 is a crucial water resource structure in the region. The dam plays a role in flood control and water storage for the surrounding area, with a maximum discharge capacity of 2520 cubic feet per second. While the dam's emergency action plan status and risk management measures are currently unknown, its presence contributes to the overall water management efforts in the St. Paul District.
The dam's location and design make it a significant feature in the water infrastructure of South Dakota, under the jurisdiction of both state and federal agencies. With a low hazard potential and a history of serving its purpose effectively, Dalhke Number 7 stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions.
Year Completed |
1956 |
Dam Length |
552 |
Dam Height |
25 |
River Or Stream |
TRIB-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
54 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Dalhke Number 7