Jerde Dam Reservoir Report
Nearby: Gilbert Ranches Pond No. Sorum Dam
Last Updated: December 6, 2025
Jerde Dam, located in Harding, South Dakota, is a private dam constructed in 2005 by the NRCS with a height of 20 feet and a length of 695 feet.
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Summary
The dam serves as a water resource management structure on Flat Butte Creek, providing a maximum storage capacity of 240 acre-feet and a normal storage level of 93 acre-feet. With a low hazard potential and a moderate risk assessment rating, Jerde Dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and undergoes regular state inspections, permitting, and enforcement.
Although Jerde Dam does not have any associated structures or outlet gates, it features an uncontrolled spillway and a maximum discharge capacity of 1350 cubic feet per second. Despite being categorized as "Not Rated" in terms of condition assessment, the dam is considered to meet safety guidelines and has not experienced any significant modifications or emergencies. With its strategic location and design, Jerde Dam plays a crucial role in water resource management and climate resilience efforts in the region, ensuring the sustainable utilization of water resources while minimizing potential risks to downstream communities and ecosystems.
Year Completed |
2005 |
Dam Length |
695 |
Dam Height |
20 |
River Or Stream |
Flat Butte Creek |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
240 |
Outlet Gates |
None |
Hazard Potential |
Low |
Nid Height |
20 |
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.
Jerde Dam