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Southern Marin Scoop - King Tides |
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Dear Southern Marin Friends and Neighbors,
As we move into the winter season, we are once again experiencing the effects of current king tides along our Southern Marin shoreline. These naturally occurring extreme high tides are a reminder that, in Southern Marin, we live with water—and during these peak events, localized flooding can temporarily disrupt our daily routines and travel patterns.
Please remember to leave yourself extra time, anticipate possible detours, and never drive through standing water, even if it appears shallow. Your safety is our priority.
Below, you’ll find helpful information on what king tides are, where we typically see their impacts, and how we can best stay prepared and informed throughout the season.
All my best,
Stephanie |
 In This Edition
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Southern Marin & Bay Shoreline
 What Are King Tides?
The highest tides of the year, caused by gravitational alignment of the sun and moon.
A preview of future sea-level rise impacts.
Occur predictably each winter, especially Nov–Jan.
Predicted king tide dates in Marin, according to the San Francisco tide gauge:
December 4-6, 2025
January 1-3, 2026
 Stay Informed
Lower Half of Manzanita Park and Ride Lot in Tam Valley Scheduled to be Closed Due to Projected High Tides
Caltrans maintenance has closed the lower half of the Manzanita Park and Ride lot, along with the shoulder parking on State Route 1 (Shoreline Highway), in Tam Valley through Monday, Dec. 8 due to forecasted high-tide flood warnings.
The projected high tides are expected during the daytime hours.
The lower half of the park and ride lot will be closed 24 hours per day during this period to prevent overnight parking in the lot, and to ensure the safety of motorists that frequent this park and ride lot.
Caltrans will activate Changeable Message Signs (CMS) in the park and ride lot to notify the public. High tides alone can flood the lot at certain times of the year. Caltrans closes parts of this lot when rains and/or tides are likely to produce problems.
For real-time traffic, click on Caltrans QuickMap.
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The Southern Marin Fire District strongly encourages residents to prepare for upcoming winter storms, power outages, and all high tide events and recommends that residents prepare themselves and their property from the possibility of wind and water damage.
Stock up on Sand Bags
Southern Marin Fire District urges residents to take preparedness measures by seeking sand and sandbags should they need them. Watch a video on how to fill and place sandbags.
Sand and bags can be purchased at local hardware stores. Sand and sand bags may also be located at the following locations:*
Mill Valley Residents (3 locations):
- 1 Hamilton Drive (Hauke Park) – sand bags are located in the parking lot next to the Public Safety Building.
- 71 Thalia St. (Boyle Park) – sand bags are located in the parking lot near the baseball fields.
- 40 Molino Ave. (near Old Mill Park) – sand bags are located behind Old Mill Park approx. 100 yards east of Molino Avenue/ Cascade Way
Sausalito Residents (2 locations):
- 610 Coloma St. (old MLK School) – sand bags are located between buildings 6 and 7.
- 530 Nevada St. (Sausalito Corps Yard) – sand bags are available Monday-Thursday 7:00 am to 3:00 pm.
Strawberry & Alto Residents:
- 10 Miland Dr. – sand bags are located across the street from 10 Miland Dr. next to the fire road gate approximately 500 ft up the hill on the left.
Tam Valley Residents:
- 203 Marin Ave. (Tam Valley Community Center parking lot) – sand and bags are to the left when you enter the parking lot; please park in the spaces and do not block the driveway – www.tamcsd.org 415-388-6393.
Tiburon Residents:
- 654 Tiburon Blvd. (Blackie's Pasture) – Sand bags are only at this location when big storms are known to be approaching.
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