Creek and the old road to Cazadero. That track was destroyed by the Christmas Week flood of 1955, and Betsy was converted to scrap metal in 1961. Habitat and pollution As of 2000, Austin Creek and all its major tributaries all supported steelhead trout. Austin Creek and East Austin Creek also harbored California freshwater shrimp. In 2016, scientists found evidence of methane-producing microbes in water coming from underground at The Cedars, the first time methanogens that thrive in harsh environments have been discovered beyond the ocean floor. Bridges Many bridges span Austin Creek. The longest of these is the State Route 116 bridge, which is long and was built in 1962. See also Armstrong Redwoods State Reserve Austin Creek State Recreation Area List of watercourses in the San Francisco Bay Area References Rivers of Sonoma County, California Rivers of Northern California Tributaries of the Russian River (California) Extremophiles 2016 in science