Tiburon officials back flood study for Greenwood Cove Drive

A car drives through floodwaters on Greenwood Cove Drive during the 7-foot king tide in November 2024. Tiburon officials have approved spending $200,000 for a study to find solutions for the recurring flooding along the Greenwood Cove Drive-Tiburon Boulevard corridor, with the study expected to take up to a year to complete. (Francisco Martinez archive / The Ark 2024)

Tiburon officials have backed spending an initial $200,000 to find easy fixes for frequent flooding along a stretch of Greenwood Cove Drive that sometimes spills over onto Tiburon Boulevard.

The Marin Flood Control Zone 4 advisory board voted 3-0 at its July 22 meeting to direct county staff to send out requests for proposals to evaluate the area’s tidal flooding and stormwater drainage, particularly drainage from Upper Cecilia Way into East Creek. Member Liza Gregory Bass was absent, and the advisory board has one vacancy.

“I think it’s a very worthwhile investment,” said member Sheldon Dorph, who sits on a subcommittee that determined the scope of the study. He said the study would eventually help “so that I don’t need a boat to get out of my house, but I can still take the car.”

The Greenwood Cove Drive-Tiburon Boulevard corridor, which has segments in both incorporated and unincorporated Tiburon, has been known to flood following seasonal king tides. The flooding is magnified during substantial rainfall, sometimes causing the water to make its way to inbound Tiburon Boulevard, as it did last December, causing ankle-high flooding on Greenwood Cove and submerging an inbound lane on the boulevard next to the 76 gas station and the Marin Transit bus stop.

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