Csah 30 Detention Reservoir Report
Nearby: Canby R-6 Norman Twp 7
Last Updated: December 13, 2025
Csah 30 Detention, located in Yellow Medicine County, Minnesota, is a crucial flood risk reduction structure designed by MNDOT in 1996.
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Summary
This earth dam stands at a height of 17 feet and spans 300 feet in length, with a storage capacity of 115 acre-feet. The primary purpose of this detention structure is to mitigate flooding in the area, particularly along the Canby Creek-OS river or stream.
With a low hazard potential and a satisfactory condition assessment as of May 2018, Csah 30 Detention serves as a reliable defense against potential flood events in the region. Managed by the local government and regulated by the Minnesota Department of Natural Resources (MNDNR EWR), this structure plays a vital role in protecting the surrounding communities from water-related disasters. Despite being uncontrolled, the spillway and outlet gates are designed to handle a maximum discharge of 320 cubic feet per second.
As water resource and climate enthusiasts, it is essential to recognize the significance of infrastructure like Csah 30 Detention in safeguarding communities and ecosystems from the impacts of extreme weather events. By understanding the design, purpose, and functionality of such structures, we can better appreciate the efforts made to manage water resources and enhance resilience in the face of changing climate patterns.
Year Completed |
1996 |
Dam Length |
300 |
Dam Height |
14 |
River Or Stream |
CANBY CREEK-OS |
Primary Dam Type |
Earth |
Surface Area |
1 |
Drainage Area |
2 |
Nid Storage |
115 |
Structural Height |
17 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big Sioux River Near Bruce
|
280cfs |
Lac Qui Parle River Near Lac Qui Parle
|
536cfs |
Redwood River Near Marshall
|
0cfs |
Minnesota River Near Lac Qui Parle
|
1240cfs |
Big Sioux R Near Castlewood Sd
|
68cfs |
Minnesota River At Montevideo
|
1810cfs |
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.
Csah 30 Detention