Mischa Chernick, a spokeswoman for PeaceHealth Ketchikan Medical Center, said all 11 individuals from the plane were brought to the hospital and being assessed.
Taquan Air, which conducts scheduled flights and sightseeing services, said it was a chartered flight.
The people were taken to a staging area with emergency personnel onsite.
Visibility was about one-quarter mile, but the pilot had made an SOS call, and rescuers were able to locate an emergency locator signal.
The pilot called 911 when the float equipped de Havilland Canada DHC-3T Turbo Otter seaplane crashed, and Alaska State Troopers alerted the Coast Guard about the crash at 8.50am local time. "We don't know specifically what the extent of those injuries are", Clint Johnson, of the National Transportation Safety Board, told the Anchorage Daily News.
A plane carrying 11 people-10 passengers and a pilot-crashed about 2,000 feet up on the side of Alaska's Mount Jumbo on Tuesday morning, according to the U.S. Coast Guard.
Johnson said preliminary information showed that some of the passengers may have had back injuries, leg injuries, possibly a broken ankle, and some bumps, cuts and bruises. All occupants in the crash are expected to survive, Hengen said.
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One MH-60 Jayhawk helicopter was already headed to the scene from Air Station Sitka, with another being dispatched.
The pilot and 11 passengers have not been identified by authorities yet.
The pilot was flying from Prince of Wales Island and bound for Ketchikan when the crash occurred, according to the Troopers.
Johnson said Temsco Helicopters also had a chopper en route to the crash site.
A Coast Guard spokesperson said all on board were alive, but some had been injured in the crash. Weather conditions so far reportedly prohibited reaching the site.
"The visibility is poor right now, so that's causing some difficulty in locating the aircraft right now", Hengen said.