Turkey Cr Watershed Site 37 Reservoir Report

Last Updated: December 13, 2025

Turkey Cr Watershed Site 37, located in Cass County, Iowa, is a vital water resource managed by the local government and regulated by the Iowa Department of Natural Resources.


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Summary

Built in 1969 by the USDA NRCS, this earth dam serves multiple purposes including fire protection, stock watering, and small fish pond enhancement. With a height of 25 feet and a length of 644 feet, the dam has a storage capacity of 137 acre-feet and covers a surface area of 8 acres, serving a drainage area of 0.53 square miles along the Turkey Creek.

Despite its low hazard potential, the dam at Turkey Cr Watershed Site 37 poses a moderate risk, prompting the need for ongoing risk management measures. The dam, primarily designed for flood risk reduction, features an uncontrolled spillway and soil foundation. The site, monitored for state inspection and enforcement, is maintained for its primary purpose while also contributing to environmental conservation efforts in the area. Amidst its scenic surroundings, the dam stands as a testament to sustainable water resource management in the region.

Year Completed

1969

Dam Length

644

Dam Height

25

River Or Stream

TR-TURKEY CREEK

Primary Dam Type

Earth

Surface Area

8

Drainage Area

0.53

Nid Storage

137

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.