Over months earlier this year, crews dug 70,000 cubic yards muck and debris out of a California creek. Officials hope that thousands of fish will be able to spawn upstream again -- and that a nearby road will stop flooding. KQEDnews
“A year or two ago I walked down the creek with my waders on and all of a sudden you're walking uphill and you're on land,” Nelson said. “The creek was gone.”Lower Butano Creek had been clogged by a mile-and-a-half long plug of sediment where the stream once flowed through the marsh to meet the ocean.Nelson says the blockage was the result of nearly two centuries of farming, logging and re-engineering the local streams, all of which triggered severe erosion.
They begin life in freshwater streams, where they spend more than a year rearing until they make their way to the ocean. Typically, after a year and a half in salt water, they return to their home creeks and rivers to spawn, then die. This anoxic water, which engulfs the fish as it rushes out of the marsh with the first storms of the rainy season, is thought to be responsible for killing thousands of steelhead over the last few decades.
As a result, locals are stranded, sometimes unable to reach homes, jobs and school. Nearby farms, which help drive the town’s economy, are damaged. If coho don’t naturally return to the system, he says, fish could be transplanted from other watersheds or breeding programs.
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