Klein Dam Reservoir Report

Last Updated: December 8, 2025

Klein Dam, located in Eddyville, Iowa, is a privately owned earth dam constructed in 1966 by the USDA NRCS for fire protection, stock, and small fish pond purposes.


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Summary

The dam stands at a height of 35 feet and spans 540 feet in length, creating a storage capacity of 120 acre-feet with a surface area of 7.4 acres. This structure is regulated by the Iowa DNR and undergoes regular state inspections and enforcement to ensure its safety and compliance with regulations.

With a low hazard potential and a moderate risk assessment rating, Klein Dam serves as a vital resource for water conservation and management in Marion County. The dam, situated on TR-North Cedar Creek, plays a key role in water storage and flood control within the region. While the dam's spillway is uncontrolled, the overall condition and maintenance of the structure are not currently rated, highlighting the need for ongoing assessment and risk management measures to ensure its continued functionality and safety for the surrounding community.

As an essential component of the local water infrastructure, Klein Dam provides valuable benefits for fire protection, livestock, and recreational activities in the area. The dam's association with the Natural Resources Conservation Service underscores its significance in sustainable water resource management. With a history dating back to the 1960s, Klein Dam remains a crucial asset for water resource and climate enthusiasts interested in the conservation and utilization of water resources in Iowa.

Year Completed

1966

Dam Length

540

Dam Height

35

River Or Stream

TR-NORTH CEDAR CREEK

Primary Dam Type

Earth

Surface Area

7.4

Drainage Area

0.29

Nid Storage

120

Hazard Potential

Low

Foundations

Soil

Nid Height

35
       
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.