Carrolton Twp 12 Reservoir Report
Nearby: Horihan-Herrick Horihan-Hazel Group
Last Updated: December 5, 2025
Carrolton Twp 12 is a privately owned dam in Fillmore, Minnesota, designed to reduce flood risk along the Root River.
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Summary
This earth dam stands at a height of 26 feet and has a storage capacity of 24 acre-feet. The dam is regulated and inspected by the Minnesota Department of Natural Resources to ensure its structural integrity and effectiveness in flood control.
Located in Whalen, Minnesota, Carrolton Twp 12 has a low hazard potential and is currently in satisfactory condition according to a 2014 assessment. The dam has not been modified in recent years and is equipped with emergency action plans to guide response in case of any unforeseen events. Despite its modest size, the dam serves a crucial role in protecting the surrounding area from potential flooding, highlighting the importance of proper maintenance and monitoring for water resource and climate enthusiasts.
As part of the flood risk reduction infrastructure in the region, Carrolton Twp 12 plays a vital role in safeguarding the community against potential disasters. With regular inspections and a satisfactory condition assessment, this privately owned dam exemplifies the collaborative efforts between private owners and state regulatory agencies to ensure the safety and resilience of water resource infrastructure in Minnesota. For enthusiasts interested in water resource management and climate adaptation, Carrolton Twp 12 serves as a noteworthy example of effective flood control measures in action.
Dam Height |
26 |
River Or Stream |
ROOT RIVER-TR |
Primary Dam Type |
Earth |
Drainage Area |
0.5 |
Nid Storage |
24 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Root River Near Pilot Mound
|
303cfs |
Root River Near Houston
|
472cfs |
South Fork Root River Near Houston
|
209cfs |
Upper Iowa River At Bluffton
|
264cfs |
Mississippi River At Winona
|
13700cfs |
Upper Iowa River At Decorah
|
137cfs |
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.
Highway 250 Campground
Sylvan City Park
Riverview City Campground
Eagle Cliff Campground & Lodging
Isinours Campsite
Fillmore County Fairgrounds Campgrounds
Carrolton Twp 12