Bloomquist Dam Reservoir Report

Last Updated: December 6, 2025

Bloomquist Dam, located in Oakland Mills, Iowa, was completed in 2002 by the Natural Resources Conservation Service (NRCS) for the primary purpose of grade stabilization along the TR-Troy Creek.


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Summary

This earth dam stands at 27 feet high and spans 280 feet in length, providing a storage capacity of 36 acre-feet for flood control and water resource management. Despite its low hazard potential and moderate risk assessment, the dam has not been rated for its current condition and lacks a formal emergency action plan.

Owned privately and not regulated by the state, Bloomquist Dam serves as a vital infrastructure for protecting the surrounding Jefferson County community from potential flooding events. With its uncontrolled spillway and stone core foundation, the dam plays a crucial role in managing the flow of water in the watershed, covering a drainage area of 0.17 square miles. Its strategic location and design by the NRCS make it an essential asset for ensuring water resource sustainability and climate resilience in the region.

Year Completed

2002

Dam Length

280

Dam Height

27

River Or Stream

TR-TROY CREEK

Primary Dam Type

Earth

Surface Area

2

Drainage Area

0.17

Nid Storage

36

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
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.