Fawn Lake Dam North Reservoir Report
Nearby: Fawn Lake Dam South Granite Diversion
Last Updated: December 18, 2025
Fawn Lake Dam North, located in Ketchikan Gateway, Alaska, is a rockfill dam completed in 1959 for hydroelectric and water supply purposes.
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Summary
With a height of 15 feet and a length of 200 feet, the dam provides a storage capacity of 80 acre-feet and covers a surface area of 4 acres. The dam has a low hazard potential and a moderate risk assessment rating of 3, with inspections conducted every three years by the Federal Energy Regulatory Commission.
Despite not being state regulated, the dam is under the oversight of the Federal Energy Regulatory Commission for inspections and operations. The spillway type is uncontrolled, with a width of 35 feet, and the maximum discharge is 720 cubic feet per second. The dam has one associated structure and is primarily owned by the local government for electricity generation and water supply purposes. The dam's location in a remote area of Alaska adds to its unique appeal for water resource and climate enthusiasts interested in exploring dam infrastructure in the region.
Dam Height |
15 |
Drainage Area |
0.1 |
Year Completed |
1959 |
Nid Storage |
80 |
Foundations |
Rock |
Surface Area |
4 |
River Or Stream |
None |
Dam Length |
200 |
Hazard Potential |
Low |
Primary Dam Type |
Rockfill |
Nid Height |
15 |
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.
Fawn Lake Dam North