Deuchar Dam Reservoir Report
Nearby: Sd Noname 278 Sd Noname 176
Last Updated: December 5, 2025
Deuchar Dam, located in Haakon, South Dakota, is a privately owned structure designed by USDA NRCS and completed in 1950.
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Summary
This earth dam stands at a height of 19 feet and has a maximum storage capacity of 210 acre-feet. It spans 730 feet along TR-SPOTTED BEAR CREEK and serves as a crucial resource for water management in the area.
The dam's primary purpose is to control the flow of water and mitigate flooding risks in the region. With a low hazard potential and a moderate risk assessment rating, Deuchar Dam plays a significant role in regulating water levels and ensuring the safety of nearby communities. The dam's uncontrolled spillway, with a width of 230 feet, allows for the controlled release of excess water during periods of high flow, helping to safeguard downstream areas from potential inundation.
Managed by the South Dakota Department of Environment and Natural Resources, Deuchar Dam undergoes regular inspections, permitting, and enforcement to maintain its structural integrity and operational efficiency. As a vital piece of infrastructure in the St. Paul District, this dam stands as a testament to the collaborative efforts between private owners and state agencies in safeguarding water resources and managing climate-related risks in the region.
Year Completed |
1950 |
Dam Length |
730 |
Dam Height |
19 |
River Or Stream |
TR-SPOTTED BEAR CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Drainage Area |
2 |
Nid Storage |
210 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
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.
Deuchar Dam