Missonot Ratedi Slope Grazing 1 Reservoir Report
Last Updated: December 13, 2025
Missonot Ratedi Slope Grazing 1 is a privately owned earth dam located in Campbell, South Dakota, along the TR-Missonot RatedI river.
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Summary
Constructed in 1952 by the Natural Resources Conservation Service, this dam stands at a height of 27 feet and has a storage capacity of 45 acre-feet. With a low hazard potential and a "Not Rated" condition assessment, this dam plays a crucial role in water resource management in the area.
Managed by the South Dakota Department of Environment and Natural Resources, Missonot Ratedi Slope Grazing 1 is subject to state regulations, inspections, and enforcement. While the dam has not been rated for its condition, its primary purpose and specific uses remain unspecified. Despite its age, this dam continues to serve its intended functions, contributing to the overall water infrastructure in the region.
Located within the St. Paul District of the US Army Corps of Engineers, Missonot Ratedi Slope Grazing 1 is part of a network of dams and structures designed to mitigate flood risks and regulate water flow. As climate change continues to impact water resources, the importance of maintaining and monitoring structures like Missonot Ratedi Slope Grazing 1 becomes increasingly evident for ensuring the resilience of the surrounding communities and ecosystems.
Year Completed |
1952 |
Dam Length |
300 |
Dam Height |
27 |
River Or Stream |
TR-MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Nid Storage |
45 |
Hazard Potential |
Low |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Oak Cr Near Wakpala Sd
|
10cfs |
Grand R At Little Eagle Sd
|
47cfs |
Beaver Creek Bl Linton
|
39cfs |
Moreau R Near Whitehorse Sd
|
35cfs |
Cannonball River At Breien
|
96cfs |
Cedar Creek Nr Raleigh
|
20cfs |
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.
Missonot Ratedi Slope Grazing 1