Walker Dam Reservoir Report

Last Updated: December 14, 2025

Walker Dam, located in Montgomery County, Iowa, serves as a crucial structure for grade stabilization along a tributary to the East Nishnabotna River.


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Summary

Built in 2005 by the USDA NRCS, this private-owned earth dam stands at 30 feet high and stretches 450 feet in length, with a storage capacity of 32 acre-feet. Its primary purpose is to prevent erosion and protect the surrounding area, making it an essential component for fire protection, stock, or small fish pond creation.

Despite its low hazard potential, Walker Dam plays a significant role in managing the local water resources and enhancing environmental sustainability. With a normal storage capacity of 17 acre-feet and a maximum discharge rate of 130 cubic feet per second, the dam ensures efficient water retention and flow regulation. While its current condition assessment is not rated, the dam's presence is a testament to responsible water resource management and climate resilience in the region.

As a key part of the local infrastructure, Walker Dam contributes to the overall water management efforts in Iowa, particularly in the prevention of soil erosion and enhancing the ecological balance of the area. With its strategic location and design features, including a stone core and soil foundation, the dam stands as a testament to effective grade stabilization and water conservation practices. Its construction and operation reflect a commitment to sustainability and environmental protection, making it a valuable asset for water resource and climate enthusiasts alike.

Year Completed

2005

Dam Length

450

Dam Height

30

River Or Stream

Trib to E. Nishnabotna

Primary Dam Type

Earth

Surface Area

3

Drainage Area

0.13

Nid Storage

32

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

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.