Hallbrook Pond Dam Reservoir Report

Last Updated: December 12, 2025

Hallbrook Pond Dam, located in Urbandale, Iowa, is a local government-owned structure designed by Civil Engineering Consultants for the primary purpose of flood risk reduction.


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Summary

Completed in 2009, this earth-type dam stands at a height of 17 feet and spans a length of 310 feet, with a storage capacity of 60 acre-feet. Situated on a tributary to Little Walnut Creek, the dam serves to mitigate flood risks while also offering recreational opportunities to the community.

Despite its significant hazard potential, with a condition assessment that is currently not rated, Hallbrook Pond Dam is subject to state regulation, inspection, and enforcement by the Iowa Department of Natural Resources. The dam's location in Dallas County, Iowa, places it under state jurisdiction and permits, ensuring its compliance with safety standards. With a spillway width of 10 feet and a surface area of 3.7 acres, the dam plays a crucial role in managing water resources in the region.

As a focal point for water resource and climate enthusiasts, Hallbrook Pond Dam serves as a vital infrastructure for flood risk reduction in the area. Its completion in 2009 marked a milestone in enhancing water management capabilities while also providing a recreational space for the local community. With ongoing state oversight and regulation, this dam stands as a testament to the importance of sustainable water resource management in the face of changing climate patterns.

Year Completed

2009

Dam Length

310

Dam Height

17

River Or Stream

Trib to Little Walnut Creek

Primary Dam Type

Earth

Surface Area

3.7

Drainage Area

1.55

Nid Storage

60

Hazard Potential

Significant

Foundations

Soil

Nid Height

17
       
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.