Shingle Mill Reservoir Report

Reservoir Report

Utah

Nearby: Deep Lake (Sanpete) Emery

Last Updated: December 5, 2025

Shingle Mill is a state-regulated water resource structure located in Mayfield, Utah, along the Mid South Fork Twelvemile Creek.

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Summary

Managed by the Utah Division of Water Rights, this dam is classified as an Earth dam with a significant hazard potential. Despite lacking specific details on its physical dimensions and storage capacity, Shingle Mill is subject to regular inspections, enforcing state regulations and permitting requirements to ensure its safety and functionality.

The dam's condition assessment is currently marked as "Not Rated," indicating a need for further evaluation. The last inspection took place in July 2020, with an inspection frequency of every two years. With its proximity to Sanpete County and a history of state jurisdiction and enforcement, Shingle Mill serves as a critical infrastructure for water resource management in the region. Its emergency action plan status and risk assessment measures are currently unspecified, suggesting a potential area for improvement and preparedness in the face of climate challenges.

As a key component of the water infrastructure in Utah, Shingle Mill presents an intriguing case study for water resource and climate enthusiasts. Its location, state ownership, and regulatory oversight by the Utah Division of Water Rights highlight the importance of maintaining and monitoring such structures in the face of changing environmental conditions. Further research and assessment of Shingle Mill's operational capacity and risk management strategies could provide valuable insights for sustainable water resource management in the region.

River Or Stream	MID SOUTH FORK TWELVEMILE CR
Primary Dam Type	Earth
Hazard Potential	Significant

Seasonal Comparison

Weather Forecast

Nearby Streamflow Levels

Manti Creek Below Dugway Creek 4.02cfs	4cfs
Salina Creek Near Emery 5.35cfs	5cfs
Ferron Creek (Upper Station) Near Ferron 7.86cfs	8cfs
Muddy Creek Near Emery 9.51cfs	10cfs
Ephraim Tunnel Near Ephraim 0.0cfs	0cfs
Ferron Cr Bl Millsite Res & Divs Nr Ferron 0.0cfs	0cfs

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.