The downpours allowed endangered fish to access creek habitats where they haven’t been seen in nearly two decades.
A group on a guided tour by the Salmon Protection and Watershed Network looks for salmon along San Geronimo Creek in San Geronimo on Saturday, Jan. 15, 2021. Ayano Hayes of the Salmon Protection and Watershed Network leads a guided tour at San Geronimo Creek in San Geronimo on Saturday, Jan. 15, 2021.
Pedestrians stop on a bridge over San Geronimo Creek to look for salmon in San Geronimo on Saturday, Jan. 15, 2021. Heavy winter rains has brought spawning salmon and their fans to creeks around Marin. “I’m very pleased with this year’s run,” said Eric Ettlinger, an aquatic ecologist with the Marin Municipal Water District who surveys the Lagunitas Creek watershed. “Even though the run seems smaller than three years ago, with all the rain, the fish were able to get high into the watershed into all the tributaries.”
Each winter, adult coho salmon enter Marin creeks after heavy rains signal them to swim upstream to spawn until about late January. After hatching two months later, the young fry rear in freshwater for about 18 months before venturing out to the ocean. After another 18 months, the fish return to Marin creeks as adults to spawn the next generation.
“We’re fortunate a lot of the fish did end up in the higher tributaries but it’s more prone for these fish to be stranded,” SPAWN conservation director Preston Brown said. “We have to keep a lot of attention on these upper creeks well into the spring and work with the California Department of Fish and Wildlife to get here and rescue fish. Otherwise, the benefit of getting up to these higher streams could be lost.
On Redwood Creek, five coho redds have been found so far but that number is expected to increase, Reichmuth said. While that count seems low, especially compared to the large number of chinook found on the creek, it is “not bad” considering the parent generation of coho, Reichmuth said.
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