West 32nd St Stormwater - Lower Dam Reservoir Report

Last Updated: December 5, 2025

The West 32nd St Stormwater - Lower Dam, located in Dubuque, Iowa, was completed in 2009 with the primary purpose of flood risk reduction along the Bee Branch river.


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Summary

This earth dam stands at 8 feet in height and spans a length of 510 feet, with a storage capacity of 111 acre-feet. The dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its structural integrity and safety.

The dam's spillway type is uncontrolled, with a width of 6 feet, and it has a significant hazard potential but is currently assessed to be in satisfactory condition as of the last assessment in 2009. The risk assessment for the dam is moderate, with a rating of 3. Despite its modest size and capacity, the West 32nd St Stormwater - Lower Dam plays a crucial role in mitigating flood risks in the area and protecting surrounding communities from potential inundation during heavy rainfall events. Water resource and climate enthusiasts will appreciate the dam's contribution to local water management and flood control efforts.

Year Completed

2009

Dam Length

510

Dam Height

8

River Or Stream

BEE BRANCH

Primary Dam Type

Earth

Surface Area

0.5

Drainage Area

1.9

Nid Storage

111

Hazard Potential

Significant

Foundations

Soil

Nid Height

8
       
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.