"The Bay Area is more than halfway toward its goal of restoring 100,000 acres of tidal wetlands, which are a natural buffer to floodwaters from future sea level rise."
"Historically, more than 190,000 acres of tidal wetlands - marshes that flood during high tides - existed across the Bay Area."
"Bay Area voters approved Measure AA in 2016, establishing a $12-per-year parcel tax meant to generate around $500 million over two decades."
"Pearce's team scored the marsh 66 out of 100, which she said is a "fair condition" and expected for a young marsh."
Restored tidal wetlands in San Francisco Bay nearly quadrupled from 2000 to 2025, countering the global trend of wetland loss. The region is more than halfway toward a goal of restoring 100,000 acres of tidal marshes that buffer floodwaters from sea level rise. Historically more than 190,000 acres existed, but more than 80% were lost during 19th- and 20th-century development. A 2016 parcel tax (Measure AA) is generating roughly $500 million over two decades to fund habitat restoration. Public and private funds supported a $14 million, 150-acre restoration in 2017. Field assessments rate young restored marshes as fair but functioning, with tidal flow enabling upland migration until infrastructure constrains it.
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