Progress Park Dam Reservoir Report

Last Updated: December 5, 2025

Progress Park Dam, located in North Liberty, Iowa, is a private dam designed by Kelly Beckler of MMS Consultants, Inc.


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Summary

Completed in 2005, this earth dam stands at a height of 23 feet and serves the primary purpose of flood risk reduction along the TR- Iowa River. With a storage capacity of 288 acre-feet and a surface area of 15.4 acres, the dam plays a crucial role in mitigating the impact of potential flooding in the area.

Managed and regulated by the Iowa Department of Natural Resources, Progress Park Dam has a satisfactory condition assessment and a significant hazard potential. The dam is equipped with an uncontrolled spillway and has a drainage area of 0.93 square miles. Despite its moderate risk assessment rating, the dam has been deemed to meet guidelines for emergency action plans and risk management measures, ensuring the safety and security of the surrounding community in the event of a flood or other emergency situation.

Progress Park Dam, situated in Johnson County, Iowa, is a vital infrastructure for water resource management and climate resilience in the region. As a key component in flood risk reduction efforts, the dam serves as a critical barrier against potential inundation, safeguarding local residents and properties from the adverse impacts of flooding. With its strategic location and effective design, Progress Park Dam stands as a testament to the importance of sustainable water resource management and proactive climate adaptation in the face of evolving environmental challenges.

Year Completed

2005

Dam Length

1455

Dam Height

23

River Or Stream

TR- Iowa River

Primary Dam Type

Earth

Surface Area

15.4

Drainage Area

0.93

Nid Storage

288

Hazard Potential

Significant

Foundations

Soil

Nid Height

23
       
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.