Warren Storage Reservoir Report

Last Updated: December 5, 2025

Warren Storage, also known as Sanke River Off Chanel Storage, is a local government-owned structure located in Warren, Minnesota.


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Summary

Designed by USDA NRCS, this facility serves the primary purpose of flood risk reduction along the Snake River. Completed in 2002, the earth dam stands at a height of 30 feet and has a storage capacity of 7,000 acre-feet.

With a significant hazard potential and a very high risk assessment rating, Warren Storage plays a crucial role in mitigating flooding in the region. This earth dam spans 23,000 feet and has a controlled spillway with a width of 10 feet. The structure is inspected regularly by the Minnesota Department of Natural Resources to ensure its satisfactory condition and continued effectiveness in protecting the surrounding area.

As a key component of water resource management in Marshall County, Minnesota, Warren Storage is a vital asset in safeguarding the community from the impacts of extreme weather events. Its strategic location along the Snake River and robust design make it an essential infrastructure for climate resilience and flood control efforts in the region. With state-regulated operations and a history of successful flood risk reduction, Warren Storage stands as a testament to effective water resource management practices in the area.

Year Completed

2002

Dam Length

23000

Dam Height

26

River Or Stream

SNAKE RIVER

Primary Dam Type

Earth

Surface Area

5

Drainage Area

56

Nid Storage

7000

Structural Height

30

Outlet Gates

Slide (sluice gate)

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

30
       
Seasonal Comparison

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.