Bart Lake Dam Reservoir Report
Nearby: Annex Creek Long Lake Dam
Last Updated: December 19, 2025
Bart Lake Dam, located in Juneau, Alaska, is a rockfill dam with a multi-arch core that serves the primary purpose of hydroelectric power generation.
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Summary
Completed in 2009, this dam stands at a height of 31 feet and has a length of 172 feet, with a normal storage capacity of 2000 acre-feet. The dam is situated on Dorothy Creek and is regulated by the Federal Energy Regulatory Commission.
Despite its low hazard potential, Bart Lake Dam has a moderate risk assessment rating of 3. The dam features an uncontrolled spillway with a width of 80 feet and has a surface area of 250 acres, serving a drainage area of 2.4 square miles. While the condition assessment is not available, the dam undergoes inspections every 3 years, with the last inspection conducted in June 2017. Emergency action plans are in place, meeting guidelines set by regulatory agencies.
This hydroelectric facility, owned by unspecified entities, plays a crucial role in meeting energy demands in the region. With its strategic location and design features, Bart Lake Dam stands as a significant infrastructure contributing to water resource management and climate resilience efforts in Alaska.
Year Completed |
2009 |
Dam Length |
172 |
Dam Height |
31 |
River Or Stream |
Dorothy Creek |
Surface Area |
250 |
Drainage Area |
2.4 |
Nid Storage |
2000 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
31 |
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.
Bart Lake Dam