Manning Meadow Reservoir Report

Last Updated: December 5, 2025

Manning Meadow is a state-regulated irrigation dam located in Piute County, Utah, along Manning Creek.


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Summary

Completed in 1970, this earth dam stands at a structural height of 85 feet and has a hydraulic height of 55 feet. With a storage capacity of 1369 acre-feet and a drainage area of 2 square miles, Manning Meadow plays a crucial role in providing water for agricultural irrigation in the region.

Managed by the Utah Division of Water Rights, Manning Meadow has a significant hazard potential, although its condition assessment is currently not rated. The dam undergoes inspections every two years, with the last inspection conducted in July 2020. While emergency action plans and risk assessment measures are not explicitly mentioned in the available data, Manning Meadow remains a key infrastructure for water resource management in the area, ensuring a stable water supply for the surrounding agricultural activities.

Situated within the Los Angeles District of the US Army Corps of Engineers, Manning Meadow exemplifies the intersection of water resource management and climate considerations. With its primary purpose being irrigation, the dam serves as a vital component of the local water infrastructure, supporting the agricultural community in Piute County. As enthusiasts of water resources and climate resilience, Manning Meadow offers an intriguing case study in the regulation and maintenance of essential water structures for sustainable water management in arid regions like Utah.

Year Completed

1970

Dam Length

315

River Or Stream

MANNING CREEK

Primary Dam Type

Earth

Hydraulic Height

55

Drainage Area

2

Nid Storage

1369

Structural Height

85

Hazard Potential

Significant

Nid Height

85
       
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.