Davis County -Mutton Hollow Db Reservoir Report

Last Updated: December 5, 2025

Davis County - Mutton Hollow Db is a privately owned dam located in Layton, Utah, that serves the primary purpose of flood risk reduction along the Mutton Hollow river.


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Summary

The dam, completed in 1996, stands at a hydraulic height of 10 feet and a structural height of 13 feet, with a length of 578 feet. It has a storage capacity of 67 acre-feet, with a normal storage level of 34 acre-feet, and a maximum discharge capacity of 27 cubic feet per second.

Managed by the Utah Division of Water Rights, the dam is regulated, inspected, and enforced by state authorities to ensure its safety and functionality. The dam has a high hazard potential but is currently in satisfactory condition, as assessed during the last inspection in June 2019. While no emergency action plan or risk assessment measures are reported, the dam continues to play a critical role in mitigating flood risks in the region.

Located in Davis County, Utah, the Mutton Hollow Db dam is a vital infrastructure providing flood risk reduction for the surrounding area. With its strategic location and efficient design, the dam stands as a testament to effective water resource management in the face of climate challenges. As water resource and climate enthusiasts, understanding the significance of dams like Davis County - Mutton Hollow Db can help us appreciate the role they play in safeguarding communities and the environment.

Year Completed

1996

Dam Length

578

River Or Stream

MUTTON HOLLOW

Primary Dam Type

Earth

Hydraulic Height

10

Drainage Area

1

Nid Storage

67

Structural Height

13

Hazard Potential

High

Nid Height

13
       
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.