Summary
The dam stands at a height of 14 feet and has a storage capacity of 71 acre-feet, with a maximum discharge rate of 1027 cubic feet per second. Situated on the TR. REDSTONE CREEK, the dam serves as a vital water resource management structure in the region.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Geyer Dam is regulated, permitted, inspected, and enforced to ensure its safety and compliance with state standards. Despite being classified as having a low hazard potential, it is considered to have a moderate risk level. The dam's spillway, with a width of 80 feet, is uncontrolled, and there are no outlet gates associated with the structure.
With its strategic location and significant impact on water management in the area, Geyer Dam stands as a testament to effective collaboration between private ownership and state regulatory agencies in safeguarding water resources and mitigating climate-related risks in South Dakota. Its construction and operation are key elements in the region's overall water infrastructure, contributing to flood control, irrigation, and overall water supply sustainability.
Year Completed |
2000 |
Dam Length |
250 |
Dam Height |
14 |
River Or Stream |
TR. REDSTONE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
14 |
Drainage Area |
1 |
Nid Storage |
71 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
James R At Huron Sd
|
548cfs |
James R Near Forestburg Sd
|
560cfs |
Big Sioux R Near Castlewood Sd
|
68cfs |
Big Sioux River Near Bruce
|
280cfs |
Big Sioux R At Watertown Sd
|
26cfs |
Big Sioux River Near Brookings Sd
|
388cfs |
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.
Geyer Dam