Repeated Flooding Prompts Emergency Declaration In Mill Valley

MILL VALLEY, CA — After flooding repeatedly shut down a major roadway, Mill Valley officials declared a local emergency as the city prepared for potentially dangerous storms and hundreds of thousands of dollars in response costs.

The City Council unanimously approved the emergency proclamation Nov. 2, following five closures of Miller Avenue in just 10 days due to high tides.

City officials warned that the approaching storm season could bring additional flooding, unstable hillsides, debris flows and fallen trees, creating hazards for residents and potentially straining city resources.

The declaration followed a stretch of unusually high tides that repeatedly flooded roads across Marin County in late October.

On Oct. 26, flooding shut down Miller Avenue and Redwood Highway Frontage Road, forcing drivers to detour until the water receded that afternoon.

But the relief was short-lived. Both roads closed again the following day as elevated tides continued to push water into low-lying areas.

By Oct. 29, flooding had spread beyond Mill Valley, with police reporting additional road closures in Larkspur and Corte Madera. The repeated disruptions came as water levels along the California coast climbed unusually high, increasing the risk of flooding even in areas that do not typically experience significant problems during high tides.

The flooding has also continued into November, with Miller Avenue and Redwood Highway Frontage Road again closed Friday, Nov. 13 because of rising water.

The city's emergency declaration is intended to help officials respond more quickly to such threats while coordinating resources and authorizing urgent spending.

The city manager estimated that emergency response efforts could cost approximately $400,000, including overtime, equipment and outside contractors.

However, reimbursement from other government agencies is not guaranteed.

The city manager told councilmembers that recovering even 25 percent of those expenses would be a positive outcome and estimated that Mill Valley could ultimately be responsible for approximately $250,000.

Councilmember Katherine Jones said the city needs to prepare for the possibility that storm-related expenses will become a recurring budget concern.

"I think that's exactly right. I mean, we're going to have to start planning ahead in terms of budgeting for these events over a period of time, and you may just keep that money in a reserve and something like that," Jones said.

"My expectation is that our budget's going to take up to about a $400,000 hit as a consequence of the storm this year."

Officials also discussed how to ensure emergency personnel could reach the city if severe weather made travel difficult.

Councilmember Stephen Burke asked whether the city should reserve hotel rooms for employees who might otherwise be unable to report to work.

"Does it make sense to pre-book and just have them?" Burke asked.

The city manager said contingency plans included lodging in Mill Valley, Larkspur and other parts of Southern Marin.

City staff will meet weekly to assess threats, coordinate with regional agencies and provide updates to the council on emergency conditions and expenditures.

The emergency declaration comes as Mill Valley continues to grapple with recurring flooding along some of its busiest roads, highlighting the challenges of preparing for future storms while managing the financial costs of emergency response.