J. Reich No.1 Reservoir Report
Nearby: J. Reich No.2 H. C. Seymore Est
Last Updated: December 7, 2025
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Summary
Reich No.1 is a privately owned earth dam located in Dewey, South Dakota, along the TR MOREAU river. Completed in 1948, this dam stands at 28 feet high and spans a length of 280 feet, with a storage capacity of 35 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with inspection, permitting, and enforcement processes in place to ensure its safety and compliance with state regulations.
Despite being classified as having a low hazard potential and not yet rated for condition assessment, J. Reich No.1 plays a crucial role in water resource management in the area. It has a maximum discharge capacity of 610 cubic feet per second, providing flood protection and water storage for the surrounding community. The dam's location and design make it a key infrastructure asset for maintaining water availability, particularly in times of drought or increased water demand.
While further assessments and emergency preparedness measures may be needed, J. Reich No.1 serves as a reminder of the importance of sustainable water resource management and climate resilience. As climate change continues to impact water availability and extreme weather events, dams like J. Reich No.1 play a vital role in safeguarding communities and supporting ecosystem health. Continued monitoring and maintenance of this dam will be essential to ensure its continued functionality and safety in the face of evolving climate challenges.
Year Completed |
1948 |
Dam Length |
280 |
Dam Height |
28 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
35 |
Hazard Potential |
Low |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Moreau R Near Faith Sd
|
14cfs |
Cheyenne R Near Plainview Sd
|
0cfs |
Grand R At Little Eagle Sd
|
47cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
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.
J. Reich No.1