White Dam Reservoir Report

Last Updated: December 5, 2025

White Dam, located in Winneshiek County, Iowa, is a privately owned earth dam completed in 2003 for purposes such as fire protection, stock, or a small fish pond.


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Summary

With a height of 24 feet and a length of 343 feet, the dam has a storage capacity of 73 acre-feet and covers a surface area of 3.4 acres. Situated on TR-Canoe Creek near the Mississippi River, the dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections, enforcement, and permitting to ensure its safety and compliance with state regulations.

Despite its low hazard potential, White Dam is subject to moderate risk due to its location and design. The dam features an uncontrolled spillway with a width of 2 feet and is primarily used for flood protection and water storage. The surrounding area experiences a drainage area of 0.76 square miles, contributing to the dam's function in managing water flow and mitigating potential risks. As part of the St. Paul District, the dam plays a crucial role in water resource management and climate resilience efforts in the region.

White Dam, owned by a private entity, stands as a testament to the importance of maintaining and regulating water infrastructure for both practical and environmental purposes. Its construction by the Natural Resources Conservation Service reflects a commitment to sustainable water management practices. With its moderate risk level and low hazard potential, the dam serves as a vital component in the overall water management system in Iowa, contributing to the protection of local communities and ecosystems.

Year Completed

2003

Dam Length

343

Dam Height

24

River Or Stream

TR- CANOE CREEK

Primary Dam Type

Earth

Surface Area

3.4

Drainage Area

0.76

Nid Storage

73

Hazard Potential

Low

Foundations

Soil

Nid Height

24
       
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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.