Freestone Dam Reservoir Report

Last Updated: December 12, 2025

Freestone Dam, located in Wiscotta, Iowa, is a privately owned structure that serves multiple purposes including fire protection, stock, and small fish pond.


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Summary

Built in 2000 by the NRCS, this earth dam stands at a height of 36 feet and has a length of 392 feet, with a maximum storage capacity of 110 acre-feet. Situated on the TR- South Raccoon River, the dam plays a crucial role in managing water resources in the area, with a surface area of 6.8 acres and a drainage area of 0.45 square miles.

The dam, classified as having a low hazard potential and a moderate risk assessment, is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement. Although its condition is currently not rated, the dam meets state guidelines and is equipped with emergency action plans. With its uncontrolled spillway type and soil foundation, Freestone Dam contributes to the overall water management efforts in Dallas County, Iowa. Enthusiasts of water resources and climate will appreciate the importance of this structure in maintaining water supply and protecting the surrounding environment.

Year Completed

2000

Dam Length

392

Dam Height

36

River Or Stream

TR- SOUTH RACCOON RIVER

Primary Dam Type

Earth

Surface Area

6.8

Drainage Area

0.45

Nid Storage

110

Hazard Potential

Low

Foundations

Soil

Nid Height

36
       
Seasonal Comparison

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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.