City Of Mnot Rateddo Number #2 Reservoir Report
Nearby: Dykstra Number 17 Hattel Dam
Last Updated: December 8, 2025
City of Mnot Rateddo Number #2 is a vital water resource infrastructure located in Jones, South Dakota, along the TR-White River.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1920, this Earth dam stands at a height of 31 feet and has a storage capacity of 225 acre-feet, with a normal storage level of 182 acre-feet. The dam plays a crucial role in flood control and water management in the region, with a maximum discharge capacity of 2205 cubic feet per second.
Managed by the local government, City of Mnot Rateddo Number #2 is regulated by the South Dakota Department of Environment and Natural Resources (DENR). Despite being in a low hazard potential category, the dam's condition assessment is currently listed as "Not Rated," indicating a need for further evaluation. With state permitting, inspection, and enforcement in place, the dam ensures public safety and environmental protection in the area.
As water resource and climate enthusiasts, understanding the significance of infrastructure like City of Mnot Rateddo Number #2 is crucial in managing water resources sustainably. With its history, design details, and regulatory framework, this dam serves as a valuable asset in the region's water management efforts, highlighting the intersection of engineering, environmental stewardship, and public safety in maintaining critical water infrastructure.
Year Completed |
1920 |
Dam Length |
1140 |
Dam Height |
31 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
31 |
Nid Storage |
225 |
Hazard Potential |
Low |
Nid Height |
31 |
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.
City Of Mnot Rateddo Number #2