Paddock Valley Reservoir Report
Nearby: Soulen Auxiliary Dike Soulen Main Dam
Last Updated: December 16, 2025
Paddock Valley, also known as New Paddock Valley Dam, is a privately owned water resource infrastructure located in Washington County, Idaho.
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Summary
Completed in 1949, this earth dam stands at a height of 49.2 feet and has a hydraulic height of 42.4 feet. The dam primarily serves the purpose of irrigation, with a storage capacity of 22,300 acre-feet and a surface area of 1,302 acres.
Situated along Indian Creek and Little Willow Creek, Paddock Valley Dam plays a crucial role in managing water resources in the region, with a drainage area of 35 square miles. With a high hazard potential and fair condition assessment, the dam is regularly inspected and monitored by the Idaho Department of Water Resources. In case of emergencies, the dam is equipped with a controlled spillway and slide gates for water release and management.
Despite its age, Paddock Valley Dam continues to be a vital component of the local water infrastructure, ensuring reliable irrigation for agricultural activities in the area. With a risk assessment rating of very high, stakeholders are actively engaged in risk management measures to maintain the dam's structural integrity and safeguard against potential hazards.
Year Completed |
1949 |
Dam Length |
300 |
Dam Height |
49.2 |
River Or Stream |
INDIAN CREEK LITTLE WILLOW CREEK |
Surface Area |
1302 |
Hydraulic Height |
42.4 |
Drainage Area |
35 |
Nid Storage |
22300 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
49 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Weiser River Nr Weiser Id
|
281cfs |
Crane Creek At Mouth Nr Weiser Id
|
6cfs |
Snake River At Weiser Id
|
10100cfs |
Payette River Nr Payette Id
|
1590cfs |
Payette River Nr Emmett Id
|
1130cfs |
Payette River Nr Letha Id
|
1270cfs |
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.
Paddock Valley