Post Group Detention Reservoir Report
Nearby: Wilmont Twp 8 Snyder Farm Pond
Last Updated: December 14, 2025
Post Group Detention, located in Murray, Minnesota, serves as a vital structure designed by USDA NRCS to address flood risk reduction along the Chanarambie River.
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Summary
Completed in 1974, this private-owned Earth dam stands at a height of 34 feet, with a capacity of 177 acre-feet for storage. With a low hazard potential and fair condition assessment, Post Group Detention is regulated by the Minnesota Department of Natural Resources and undergoes regular inspections to ensure its functionality.
Despite its modest size, Post Group Detention plays a crucial role in managing water resources in the region, offering flood risk reduction benefits to the surrounding community. The dam's uncontrolled spillway and outlet gates, in combination with its buttress core type, contribute to its operational efficiency. While the dam's primary purpose is flood risk reduction, it also serves as a testament to effective collaboration between private ownership and state regulatory agencies to safeguard against potential water-related emergencies.
With its moderate risk assessment and a history of maintained functionality, Post Group Detention exemplifies the importance of proactive water resource management in mitigating the impacts of climate change. As climate enthusiasts and water resource advocates continue to monitor and support such structures, Post Group Detention stands as a testament to the intersection of infrastructure, regulation, and environmental stewardship in safeguarding local communities against the threats of flooding and water scarcity.
Year Completed |
1974 |
Dam Height |
34 |
River Or Stream |
CHANARAMBIE RIVER-TR |
Primary Dam Type |
Earth |
Drainage Area |
0.7 |
Nid Storage |
177 |
Structural Height |
39 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
39 |
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.
Post Group Detention