By Cassandra Profita
Video captures four Klamath River dam sites before and after a $500 million removal operation.

The largest dam removal project in U.S. history was completed Oct. 2 on the Klamath River in Southern Oregon and Northern California.
Four dams were taken out, allowing adult salmon to swim all the way up the Klamath River from the Pacific Ocean and into more than 400 miles of newly reopened habitat.

Watch it Here!