Casey Mill And Elevator Ia-57-148 Reservoir Report

Last Updated: December 14, 2025

Casey Mill and Elevator Ia-57-148 is a privately owned water resource structure located in Casey, Iowa, along the TR-Middle River.


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Summary

Constructed in 1974 by the USDA NRCS, this earth dam stands at a height of 23 feet and has a storage capacity of 52 acre-feet. The primary purpose of this dam is for fire protection, stock, or a small fish pond, serving the local community with a surface area of 3.8 acres and a drainage area of 0.31 square miles.

Managed by the Iowa DNR, this dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. While the risk assessment indicates a moderate risk level, there have been no reported modifications or inspections in recent years. Despite its uncontrolled spillway type, Casey Mill and Elevator Ia-57-148 plays a crucial role in water resource management and climate resilience in Guthrie County, Iowa. As a key infrastructure for emergency water supply and local ecosystem support, this dam highlights the importance of private-public partnerships in safeguarding water resources.

With its location in a rural area and limited associated structures, Casey Mill and Elevator Ia-57-148 serves as a critical asset for the community's water needs and environmental protection. As climate change continues to impact water resources, the proper management and maintenance of such structures are essential for ensuring water security and resilience in the face of evolving climate challenges. The collaboration between private owners, state regulators, and federal agencies in overseeing this dam underscores the importance of coordinated efforts in safeguarding water resources for current and future generations.

Year Completed

1974

Dam Length

378

Dam Height

23

River Or Stream

TR-MIDDLE RIVER

Primary Dam Type

Earth

Surface Area

3.8

Drainage Area

0.31

Nid Storage

52

Hazard Potential

Low

Foundations

Soil

Nid Height

23
       
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.