Jughandle Estates Reservoir Report

Last Updated: December 15, 2025

Nestled in the picturesque Jughandle Estates in Idaho, a private earth dam stands tall, serving as a vital water resource for the community.


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Summary

Built in 1974, this dam on an unnamed stream of Boulder Creek boasts a height of 27.7 feet and a storage capacity of 27 acre-feet. With a surface area of 3 acres and a drainage area of 0.1 square miles, this dam plays a crucial role in managing water flow and ensuring water availability for the region.

Managed by the Idaho Department of Water Resources, this dam is classified as significant in terms of hazard potential, yet its condition is assessed as fair. The presence of an uncontrolled spillway and a slide gate outlet adds to its structural integrity. Regular inspections ensure that the dam is safe and operational, with the last assessment conducted in August 2017. While the risk level is moderate, the community relies on this dam for water supply and flood control, highlighting the importance of its upkeep and maintenance in the face of changing climate conditions.

Jughandle Estates Dam stands as a testament to human engineering and resource management in a challenging environment. With its stone core and rock-soil foundation, this dam symbolizes the intersection of water resource management and climate resilience. As water enthusiasts and climate advocates, the role of this dam in sustaining the ecosystem and community livelihoods underscores the need for continued monitoring and investment in sustainable water infrastructure in the face of a changing climate landscape.

Year Completed

1974

Dam Length

440

Dam Height

27.7

River Or Stream

UNNAMED STREAM BOULDER CREEK

Surface Area

3

Hydraulic Height

24.4

Drainage Area

0.1

Nid Storage

27

Outlet Gates

Slide (sluice gate)

Hazard Potential

Significant

Foundations

Rock, Soil

Nid Height

28
       
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.