M. Schatz No.1 Reservoir Report
Nearby: M. Schatz No.2 Pothast Dam
Last Updated: December 7, 2025
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Summary
Schatz No.1 is a privately owned dam located in Ziebach, South Dakota, along the TR CHEYENNE river. Built in 1949, this Earth-type dam stands at a height of 24 feet and has a length of 1000 feet. With a storage capacity of 273 acre-feet, the dam serves the primary purpose of water resource management in the region.
Managed by the DENR and regulated by the state of South Dakota, M. Schatz No.1 has been deemed to have low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. Despite lacking certain inspection and emergency preparedness measures, the dam continues to play a crucial role in controlling water flow and providing essential services to the local community.
Although not under the jurisdiction of USACE, M. Schatz No.1 remains a key infrastructure for water resource enthusiasts and climate advocates interested in the sustainable management of water bodies. With its historical significance and ongoing operations, this dam serves as a reminder of the importance of maintaining and monitoring critical water resources for the benefit of both people and the environment.
Year Completed |
1949 |
Dam Length |
1000 |
Dam Height |
24 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
273 |
Hazard Potential |
Low |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Cheyenne R Near Plainview Sd
|
0cfs |
Moreau R Near Faith Sd
|
14cfs |
Grand R At Little Eagle Sd
|
47cfs |
Bad R Near Fort Pierre Sd
|
7cfs |
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.
M. Schatz No.1