Harvey Dam Reservoir Report

Last Updated: December 6, 2025

Harvey Dam, located in Lockridge, Iowa, is a privately owned structure designed by USDA NRCS for grade stabilization purposes.


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Summary

Completed in 2006, this earth dam stands at a height of 26 feet and spans a length of 310 feet, with a storage capacity of 40 acre-feet. Situated on a tributary to Wolf Creek, the dam plays a crucial role in managing water resources and preventing erosion in the area.

With a low hazard potential and not yet rated for condition assessment, Harvey Dam serves as a vital infrastructure for water management in Jefferson County, Iowa. Despite its modest size, the dam's impact on the local hydrology is significant, with a maximum discharge capacity of 131 cubic feet per second. As a key component of the local water resource system, the dam contributes to the overall sustainability and resilience of the region's water supply and climate adaptation efforts.

As water resource and climate enthusiasts, the intricate details of Harvey Dam's design, construction, and operational characteristics offer valuable insights into the complexities of managing water infrastructure. With its state permitting and inspection compliance, the dam exemplifies best practices in infrastructure governance and underscores the importance of effective water resource management in mitigating climate-related risks and ensuring long-term water security for the community.

Year Completed

2006

Dam Length

310

Dam Height

26

River Or Stream

Trib to Wolf Creek

Primary Dam Type

Earth

Surface Area

3

Drainage Area

0.17

Nid Storage

40

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.