Summary
Mangin, a privately owned dam located in Potter, South Dakota, was completed in 1956 and stands at a height of 24 feet with a length of 600 feet. This earth-type dam has a storage capacity of 125 acre-feet and a maximum discharge of 405 cubic feet per second. Despite being classified as having a low hazard potential, the dam's condition assessment is currently listed as "Not Rated," highlighting the need for further evaluation and maintenance to ensure its safety and longevity.
Managed by the South Dakota Department of Environment and Natural Resources, J. Mangin is subject to state regulation, permitting, inspection, and enforcement. While the dam is currently in a stable condition, its emergency action plan status, risk assessment, and management measures are all marked as unknown or pending, suggesting a potential area for improvement in terms of preparedness and response in case of emergencies. As a vital piece of infrastructure for water resource management in the region, it is crucial that J. Mangin receives the necessary attention and resources to prevent any potential risks or hazards.
As climate change continues to impact water resources and infrastructure, enthusiasts and stakeholders in the field of water resource management should monitor developments related to J. Mangin and other dams to ensure their resilience in the face of changing environmental conditions. By staying informed and engaged with the maintenance and regulations surrounding these structures, individuals can contribute to the sustainable management of water resources and the protection of communities that rely on them for various purposes.
Year Completed |
1956 |
Dam Length |
600 |
Dam Height |
24 |
River Or Stream |
TR-MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
125 |
Hazard Potential |
Low |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
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.
J. Mangin