Summary
Built in 1951, this earth dam structure stands at a height of 19.1 meters and has a normal storage capacity of 189 acre-feet. The lake covers a surface area of 20 acres and is fed by Challis Creek, providing water for agricultural activities in the region.
Despite its low hazard potential, Challis Lake has been assessed to be in poor condition, highlighting the need for maintenance and repairs to ensure its continued functionality. The dam features an uncontrolled spillway with a width of 10 feet and a maximum discharge capacity of 80 cfs. The risk assessment for Challis Lake has been classified as moderate, indicating a potential for moderate consequences in the event of a failure, emphasizing the importance of ongoing monitoring and management measures.
With its picturesque location and vital role in supporting local irrigation needs, Challis Lake serves as a crucial water resource in the region. As climate change continues to impact water availability and quality, the maintenance and upkeep of infrastructure like Challis Lake become increasingly important to ensure sustainable water management practices for future generations.
Year Completed |
1951 |
Dam Length |
400 |
Dam Height |
19.1 |
River Or Stream |
CHALLIS CREEK LAKES CHALLIS CREEK |
Surface Area |
20 |
Hydraulic Height |
15.4 |
Drainage Area |
0.8 |
Nid Storage |
189 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
19 |
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
| Location | Reservations | Toilets |
|---|---|---|
Twin Peaks Camping Area
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Mosquito Flat Reservoir Campground
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Mosquito Flat Reservoir
|
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Mahoney Springs Camp
|
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Mahoney Complex
|
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Eightmile Camping Area
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Challis Lake
Headwaters To Nf Boundary