Hendricks Dam Reservoir Report

Last Updated: December 12, 2025

Hendricks Dam, located in Lee County, Iowa, was completed in 1974 by the USDA NRCS and is owned privately.


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Summary

The dam serves multiple purposes, including fire protection, stock maintenance, and small fish pond management. With a height of 29 feet and a length of 225 feet, Hendricks Dam has a storage capacity of 84 acre-feet and covers a surface area of 5.8 acres. Despite its low hazard potential and moderate risk assessment, the dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its safety and integrity.

Situated on TR-Jack Creek, Hendricks Dam plays a crucial role in managing water resources in the region, providing essential services to the local community. The dam is designed as an earth dam with a soil foundation and an uncontrolled spillway type. While it has not been modified in recent years and its condition is currently not rated, the dam's emergency action plan status and risk management measures are not specified in the available data. Overall, Hendricks Dam serves as a valuable asset for water resource management and climate resilience efforts in the area.

With its strategic location in Montrose, Iowa, Hendricks Dam contributes to the overall water management infrastructure in the region. Owned by a private entity, the dam is inspected, permitted, and regulated by state authorities to ensure compliance with safety standards. While its primary purpose is for fire protection and stock maintenance, Hendricks Dam also supports environmental conservation efforts and provides a habitat for small fish populations. As water resource and climate enthusiasts, understanding the role of dams like Hendricks Dam is essential for sustainable water management practices and enhancing resilience to climate change impacts.

Year Completed

1974

Dam Length

225

Dam Height

29

River Or Stream

TR-JACK CREEK

Primary Dam Type

Earth

Surface Area

5.8

Drainage Area

0.11

Nid Storage

84

Hazard Potential

Low

Foundations

Soil

Nid Height

29
       
Seasonal Comparison

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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.