Summary
Built in 1961 by Carey and Kramer, this arch dam harnesses the power of Sawmill Creek to generate clean energy while also serving as a recreational area and water supply source. With a surface area of 1,646 acres and a drainage area of 37 square miles, Blue Lake offers a picturesque setting for water resource and climate enthusiasts to explore.
Managed by the Federal Energy Regulatory Commission, Blue Lake's spillway type is uncontrolled, with a width of 140 feet to handle a maximum discharge of 14,000 cubic feet per second. The dam's hazard potential is rated as high, yet its risk assessment is moderate (3). While the condition assessment is not available, the emergency action plan was last revised in March 2021, ensuring that safety measures are in place for any potential risks. For those interested in sustainable energy and water management, Blue Lake is a prime example of how hydroelectric infrastructure can support both environmental and community needs in a remote Alaskan setting.
Overall, Blue Lake stands as a testament to the ingenuity of engineering and the importance of sustainable water resource management. With its multi-arch design and rock foundation, this hydroelectric facility not only provides clean energy but also supports recreation and water supply needs in the region. As climate change continues to impact water resources worldwide, the resilience and functionality of structures like Blue Lake highlight the crucial role that sustainable infrastructure plays in mitigating environmental challenges and ensuring a reliable water supply for future generations.
Year Completed |
1961 |
Dam Length |
288 |
Dam Height |
294 |
River Or Stream |
Sawmill Creek |
Primary Dam Type |
Arch |
Surface Area |
1646 |
Hydraulic Height |
136 |
Drainage Area |
37 |
Nid Storage |
266000 |
Structural Height |
210 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
294 |
Seasonal Comparison
Weather Forecast
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.
Blue Lake