Hulet Reservoir Report
Nearby: Hulet No 2 Dam Pacific Land Co
Last Updated: December 23, 2025
Hulet, also known as Sinker Creek Reservoir, is a private water resource located in Owyhee County, Idaho.
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Summary
This reservoir, completed in 1976, serves various purposes and has a storage capacity of 4,290 acre-feet. With its primary purpose classified as "Other," Hulet stands out for its unique design as an earth dam constructed with stone core and rock and soil foundations.
Located along Sinker Creek and the Snake River, Hulet plays a crucial role in water management and conservation in the region, with a surface area of 127 acres and a drainage area of 57 square miles. Despite its fair condition assessment and high hazard potential, the reservoir is regularly inspected and maintained by the Idaho Department of Water Resources to ensure its structural integrity and safety. In case of emergencies, a slide gate serves as the outlet control mechanism for water release.
For water resource and climate enthusiasts, Hulet presents an intriguing case study of a privately-owned dam with state regulation and inspection. Its moderate risk assessment highlights the importance of effective risk management measures and emergency preparedness in safeguarding water resources and infrastructure. This reservoir's strategic location and design contribute significantly to the local water supply and ecosystem, making it a noteworthy site for conservation and sustainable water resource management efforts in Idaho.
Year Completed |
1976 |
Dam Length |
1500 |
Dam Height |
99 |
River Or Stream |
SINKER CREEK SNAKE RIVER |
Surface Area |
127 |
Hydraulic Height |
92 |
Drainage Area |
57 |
Nid Storage |
4290 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
99 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Hulet