Newcastle Reservoir Report

Last Updated: May 3, 2026

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Newcastle, located in Iron County, Utah, is a privately owned irrigation dam on Pinto Creek, designed by USDA NRCS and regulated by the Utah Division of Water Rights.


Summary

Completed in 1956, this earth dam stands at a height of 83 feet with a hydraulic height of 75 feet. It has a storage capacity of 7,900 acre-feet and serves the primary purpose of irrigation.

With a drainage area of 134 square miles and a maximum discharge of 150 cubic feet per second, Newcastle Dam plays a crucial role in water resource management in the region. Despite being classified as having a high hazard potential, the dam is currently in fair condition as per the last inspection in July 2020. As an essential component of the local water infrastructure, Newcastle Dam contributes to agricultural productivity and supports the community's water needs.

Maintaining and monitoring Newcastle Dam is vital for ensuring its safety and functionality in the face of changing climate conditions. With its strategic location and significance in water resource management, Newcastle serves as a key asset in sustaining water security and agricultural activities in the region. Enthusiasts of water resources and climate resilience can appreciate the importance of Newcastle Dam in safeguarding water supply and irrigation capabilities for the surrounding area.

15-Day Long Term Forecast


Year Completed

1956

Dam Length

805

River Or Stream

PINTO CREEK

Primary Dam Type

Earth

Hydraulic Height

75

Drainage Area

134

Nid Storage

7900

Structural Height

83

Hazard Potential

High

Nid Height

83
       
Seasonal Comparison

5-Day Hourly Forecast Detail

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.