Lower Snake salmon and steelhead have no other options
Over the past 25 years, the Snake basin has averaged less than two returning adults for every 100 smolt. Biologists from Oregon and Idaho, the U.S. Fish and Wildlife Service, and various tribes estimate that Snake River dam breaching will increase smolt-to-adult return ratios by four times.
Taking out the four lower Snake River dams would return 140 miles of habitat to a naturally functioning river and significantly reduce the time it takes for smolts to make it to the ocean.
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