First phase of Dry Creek habitat makeover nears completion


Construction crews that have spent more than two years reconfiguring a mile-long stretch of Dry Creek outside Healdsburg are about to mark completion of the critical first leg of what, by 2020, is to be a six-mile project designed to create new habitat for threatened and endangered fish.

So far, workers have strategically placed thousands of tons of locally sourced rock and more than a thousand giant root balls and saw logs in the creek, and they’ve removed some 30,000 cubic yards of soil and gravel to create restful backwaters, some of which already are being used by fish species whose very survival is at risk, officials said.

The overall goal is to offer supportive habitat for coho and chinook salmon, as well as steelhead trout, that includes areas of slow-water refuge, plenty of places to hide from predators, adequate food supply and cool, shallow current — partly offsetting the loss of 130 square-miles of upstream habitat cut off by the construction of Warm Springs Dam to create Lake Sonoma in 1983.

The reservoir has offered the project one advantage: From the dam at its southern end comes a reliable supply of cold, clear water that’s so rare in the Russian River watershed these days, said Eric Larson, environmental program manager for the California Department of Fish and Wildlife.

“Basically, it comes down to the recognition that due to the characteristics of Dry Creek following the construction of the Warm Springs Dam, Dry Creek offers a huge opportunity to create salmonid habitat in the Russian River watershed where it once did not exist,” at least not year-round, Larson said.

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