May 9th, 2014 fly-by of Hubbard Glacier... Hubbard is the fastest advancing tidewater glacier in the world. In the spring, she can surge as much as 150 feet in a day. Hubbard has twice sealed off the Russell Fiord at Gilbert Point in recent history - once in 1986 and again in 2002. Someday, Hubbard Glacier is expected to "permanently" close the fiord, creating the largest glacially dammed lake in the world.
The lake water will rise and overflow the old moraine into the Situk River. The resulting outflow from Russell Lake is expected to decimate the Situk's world-famous steelhead and salmon run. Half of all steelhead caught in the state of Alaska are caught on the pristine Situk River.
As you can see from this video fly-over, the gap between the glacier and Gilbert Point this year is pretty wide. Tidal surges through the gap usually keeps the gravel push moraine clear from the narrow passage and undercuts the glacier's face to keep the icebergs falling. Hubbard reaches nearly 100 miles inland, collecting snow throughout the year from the flanks of Mt Logan in Yukon Territory, Canada. Logan is the tallest mountain in Canada.
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