Angostnot Rateda Grazing Pond 1 Reservoir Report
Last Updated: December 7, 2025
Angostnot Rateda Grazing Pond 1, located in Fall River, South Dakota, is a privately owned earth dam constructed in 1956 with a height of 7 feet and a storage capacity of 52 acre-feet.
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Summary
Situated along a tributary of the White River, this pond serves multiple purposes, including irrigation, livestock watering, and flood control. Despite its low hazard potential, the dam's condition assessment is marked as "Not Rated," indicating a need for further evaluation to ensure its long-term safety and functionality.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Angostnot Rateda Grazing Pond 1 is subject to state regulations, permitting, inspection, and enforcement to uphold its structural integrity and environmental impact. While the dam has not been modified in recent years, its emergency action plan (EAP) status, risk assessment, and management measures are currently not available, raising questions about its preparedness for potential emergencies or disasters. With a maximum discharge capacity of 1760 cubic feet per second, stakeholders and water resource enthusiasts may find value in advocating for comprehensive assessments and risk mitigation strategies to safeguard this vital water resource.
As a key feature in the local water infrastructure, Angostnot Rateda Grazing Pond 1 presents an opportunity for collaboration between private owners, regulatory agencies, and the community to ensure its continued functionality and resilience in the face of changing climate conditions. With its proximity to residential areas and agricultural lands, proactive monitoring, maintenance, and planning are essential to mitigate risks and enhance the pond's capacity to support sustainable water use practices in the region.
Year Completed |
1956 |
Dam Length |
400 |
Dam Height |
7 |
River Or Stream |
TRIBUTARY WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
7 |
Nid Storage |
52 |
Hazard Potential |
Low |
Nid Height |
7 |
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.
Angostnot Rateda Grazing Pond 1