Summary
Mraz is a privately owned earth dam located in Ziebach, South Dakota, along the TR MOREAU river. Built in 1956, this dam stands at a height of 22 feet and spans 690 feet in length, with a storage capacity of 264 acre-feet. Despite its low hazard potential, the dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and undergoes regular inspections, permitting, and enforcement to ensure its structural integrity and safety.
Managed by a private owner, M. Mraz serves as a crucial water resource infrastructure in the region, providing flood control and water storage for agricultural and environmental purposes. With a maximum discharge capacity of 3,780 cubic feet per second, the dam plays a vital role in managing water flow and ensuring water security in the area. While the dam's condition is currently not rated, it is subject to ongoing risk assessment and management measures to address any potential hazards and ensure public safety.
Located within the St. Paul District of the US Army Corps of Engineers, M. Mraz is a key component of the local water management system. With its modest storage capacity and low hazard potential, the dam contributes to the overall resilience of the region's water infrastructure. Ongoing monitoring and maintenance efforts, in coordination with state regulatory agencies, help to safeguard the dam's integrity and functionality for the benefit of the surrounding community and ecosystem.
Year Completed |
1956 |
Dam Length |
690 |
Dam Height |
22 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
264 |
Hazard Potential |
Low |
Nid Height |
22 |
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.
M. Mraz