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Highways. Trails. Roads. Ferry terminals. Bike paths. Train lines. Much of Marin County’s spiderweb of coastal and bayside transit options is at risk of inundation from rising sea levels in the coming decades, according to a recent study identifying the climate vulnerabilities of its built infrastructure.
The county, surrounded by water on three sides, is already plagued by flooding during high tides several times a year. Now it has a greater understanding of its future sea level rise risk due to the effects of human-caused climate change, thanks to the study unveiled last week by the Transportation Authority of Marin, or TAM, in collaboration with environmental consulting firm Arup.
Researchers identified 19 areas along the Marin County shoreline that are prone to flooding, sea level rise and groundwater rise, noting that “tipping points” at which flooding becomes permanent are just decades out in some locations. In others, temporary flooding could spike in the years to come…