SNOFLO

Rochester 50th Ave Nw Reservoir Report

Last Updated: December 4, 2025

Rochester 50th Ave NW is a vital flood risk reduction structure located in Olmsted County, Minnesota.


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Summary

Completed in 2007, this earth dam stands at a height of 28 feet and has a storage capacity of 150 acre-feet. Managed by the Minnesota Department of Natural Resources, the dam plays a crucial role in protecting the surrounding area from potential flooding events, particularly along the South Park River-TR.

With a significant hazard potential and a satisfactory condition assessment as of June 2017, Rochester 50th Ave NW is regularly inspected to ensure its effectiveness in mitigating flood risks. The dam's location in Rochester, Minnesota, contributes to the overall water resource management efforts in the region. This structure serves as a testament to proactive measures taken to safeguard communities and infrastructure from the impacts of extreme weather events, showcasing the importance of sustainable water resource and climate resilience practices.

Year Completed

2007

Dam Height

28

River Or Stream

SOUTH PARK RIVER-TR

Primary Dam Type

Earth

Surface Area

4.1

Drainage Area

1

Nid Storage

150

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

28
       

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.
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