ELWHA, Wash. -- Six webcams will snap pictures throughout the day during the three-year removal process the Elwha River dams.

The Olympia National Park says that the primary purpose of the webcams is to monitor sediment movement, but that the public will be able to look at the pictures on the Internet.

Crews began the long process of dismantling 108-foot high Elwha Dam and the 210-foot high Glines Canyon Dam Thursday.

Just hours after the removal process first got underway, a hole at the top of the Glines Dam was visible on the web cam, which were installed last week.

The Elwha dams are nearly a century old and would be the largest of about 750 dams removed around the country.

The removal of the Glines Canyon is the largest in U.S. history. The dams will be removed gradually, and should be gone by March 2014.

Scientists hope the fish populations will rebound when the dams are out, with as many as 20,000 to 30,000 chinook returning each year.

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