SEAPA hopes to expand the Swan Lake dam by filling in the spillway slot, thereby raising the reservoir 15 feet and potentially saving 12,000 megawatt hours of otherwise lost power production.
Southeast Alaska Power Agency (SEAPA) CEO Trey Acteson spoke before the Petersburg Borough Assembly last week and the Wrangell Assembly this week to update the communities on the progress of the Swan Lake expansion project and apprise them of their role in upcoming refinancing efforts.
The current dam at Swan Lake is 174 feet tall and 430 feet wide with a spillway slot that is 15 feet high and 100 feet wide.
"Essentially the project is to fill that spillway slot, be able to raise the reservoir 15 feet," Acteson said. "It gives us an extra 25 percent active storage in that reservoir so pretty g...
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