Hidden Springs Cell 3a Reservoir Report
Last Updated: December 19, 2025
Hidden Springs Cell 3a is a privately owned water resource structure located in Boise Subdivision, Idaho.
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Summary
This dam was completed in 2007 and has a height of 42.5 feet, with a primary purpose classified as 'Other'. The dam is primarily made of earth and stone, with a soil foundation, and serves as a water storage facility with a normal storage capacity of 81.3 acre-feet. It is regulated by the Idaho Department of Water Resources and undergoes regular inspections to ensure its structural integrity and safety.
The dam is situated along an unnamed stream, Dry Creek, and has a drainage area of 0.04 square miles. Despite its satisfactory condition assessment in 2018, Hidden Springs Cell 3a has a significant hazard potential, warranting a high-risk assessment rating. Its risk management measures and emergency action plan status are not specified in the data. With its strategic location and critical role in water management, this dam serves as a vital asset in maintaining water resources in the Ada County area, highlighting the importance of proper maintenance and regulation to mitigate potential risks and ensure long-term sustainability.
Water resource and climate enthusiasts will find Hidden Springs Cell 3a an intriguing subject of study due to its significant hazard potential and high-risk assessment. The dam's construction materials, storage capacity, and regulatory oversight by the Idaho Department of Water Resources provide valuable insights into the challenges and responsibilities associated with managing water infrastructure in a dynamic environment. As climate change continues to impact water resources, understanding the condition and risk associated with structures like Hidden Springs Cell 3a becomes increasingly essential for ensuring the resilience and sustainability of water management systems in the face of evolving environmental conditions.
Year Completed |
2007 |
Dam Height |
42.5 |
River Or Stream |
UNNAMED STREAM DRY CREEK |
Surface Area |
3.2 |
Hydraulic Height |
39.5 |
Drainage Area |
0.04 |
Nid Storage |
81.3 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
43 |
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.
Area Campgrounds
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Shafer Butte CG and Group sites - reserve - TENT
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Shafer Butte
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Gowen Field Military
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Hidden Springs Cell 3a