Report emphasizes urgent need to respond to sea-level rise, but peninsula efforts stall

Yellow zones show predicted flooding under 20 inches of sea rise, calculated from the year 2000, with the flood surge of a 100-year storm. Flooded areas would include all the Belvedere Lagoon and portions of West Shore Road and Beach Road, along with downtown Tiburon along Main Street, Blackie’s Pasture and Greenwood Cove. (De Novo Planning Group via town of Tiburon)

Tiburon Peninsula communities are among Marin’s most vulnerable to sea-level rise, officials say, but while some communities are moving forward with adaptation plans, talks on the Tiburon Peninsula about how to address this future menace have largely stalled.

A Marin civil grand jury report released May 31 concludes that a collaborative and cooperative response to sea-level rise is urgent and has required the county Board of Supervisors respond by Sept. 2.

“Marin is facing 10-12 inches of sea-level rise in the span of 26 years,” the report said. “But the water has already arrived. Marin residents have been experiencing sea-level rise and related tidal flooding. … This trend will only increase in frequency and intensity over the coming years.”

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