Sandy City - Buttercup Reservoir Report

Last Updated: December 5, 2025

Sandy City - Buttercup is a flood risk reduction structure located in Sandy, Utah, with a primary purpose of mitigating flood risks in the area.


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Summary

The dam, completed in 1983, is classified as an Earth-type structure with a hydraulic height of 5 feet and a structural height of 7 feet. It has a normal storage capacity of 9 acre-feet and is regulated by the Utah Division of Water Rights.

This dam plays a significant role in protecting the surrounding community from potential flooding events, as it is deemed to have a hazard potential of "Significant". While the condition assessment is currently "Not Rated", the structure undergoes regular inspections with a frequency of every 3 years to ensure its integrity and functionality. The last recorded inspection date was in April 2005, highlighting the importance of ongoing monitoring and maintenance to uphold its effectiveness in flood risk management.

Sandy City - Buttercup serves as a crucial asset for flood control in the region, providing peace of mind to residents and stakeholders in the face of potential water-related hazards. With its strategic location and design, this structure stands as a testament to proactive water resource management and climate resilience efforts in the area.

Year Completed

1983

Primary Dam Type

Earth

Hydraulic Height

5

Drainage Area

0.1

Nid Storage

9

Structural Height

7

Hazard Potential

Significant

Nid Height

7
       
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.