Maloney Reservoir Report

Last Updated: December 5, 2025

Maloney, located in North Platte, Nebraska, is a public utility dam managed by the Nebraska Department of Natural Resources.


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Summary

This hydroelectric dam, completed in 1935, serves the primary purposes of hydroelectric power generation and irrigation. With a dam height of 44 feet and a length of 8700 feet, Maloney has a storage capacity of 19,450 acre-feet and is situated on the North & South Platte River system.

The Federal Energy Regulatory Commission oversees the regulatory and inspection aspects of Maloney, ensuring its safe operation. The dam's hazard potential is deemed high, reflecting the importance of proper risk assessment and management. Despite the lack of available condition assessment data, the dam's emergency action plan was last revised in December 2018, highlighting the ongoing efforts to maintain safety protocols in case of emergencies.

Maloney represents a vital component of Nebraska's water resource infrastructure, showcasing the intersection of hydroelectric power generation and irrigation needs. As climate change impacts water resources, dams like Maloney play a crucial role in water management and energy production, underlining the importance of consistent inspection and risk management practices to ensure continued safety and functionality.

Year Completed

1935

Dam Length

8700

Dam Height

44

River Or Stream

North & South Platte

Primary Dam Type

Earth

Nid Storage

19450

Outlet Gates

Vertical Lift - 2

Hazard Potential

High

Foundations

Soil

Nid Height

44
       
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.