Update from Kate - King Tides Coming; Watch for Flooding and Be Prepared!

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Update from Kate 

King Tides Coming; Watch for Flooding and Be Prepared!

Despite the expected clear skies for this weekend and next week, high tides are predicted to cause localized flooding in areas of Marin County. Locations that are historically prone to tidal flooding, such as Manzanita Park & Ride near Tam Junction and HWY 101 ramps at Marin City, are most likely to be impacted.

CAMERA VIEW of Manzanita intersection available via Caltrans:

View the area using this link hereNOTE - Be safe! Please check this area before leaving home and not while driving.


Travelers and commuters should give themselves extra time in case of traffic delays due to localized flooding.  Do not try to drive through flooded areas; even 12 inches of standing water can float a standard-size car.


Anticipated high tide dates, times and peak levels:


Saturday, December 2                   9:45am         6.7ft

Sunday, December 3                     10:27am        6.9ft

Monday, December 4                     11:12am        7.0ft

Tuesday, December 5                    12:00pm        6.8ft


Further dates with high tides exceeding 6.5 feet are predicted on the following dates:


Saturday, December 30                  8:38 am               

Sunday, December 31                    9:25 am

Monday, January 1                        10:12 am

Tuesday, January 2                       11:01 am

Wednesday, January 3                   11:52 am

Sunday, January 28                       8:15 am

Monday, January 29                       9:08 am

Tuesday, January 30                      10:01 am

Wednesday, January 31                  10:53 am


More detail on predicted high tides for our region, including future high tide schedules, can be found on the National Weather Service’s website:  http://bit.ly/2AsQwYf


If your property is located in an area that experiences tidal flooding, it is advised to plan ahead. Drains and gutters on private property should be cleared of debris and, if necessary, sandbags should be filled in advance of expected flooding dates. Here is a video showing proper sandbag handling: https://youtu.be/5fa8ApB_TFc


Sandbags can be purchased from stores around Marin County, including, among others:

  • Goodman Building Supply in Mill Valley, (415) 388-6233 
  • Martin Bros in Mill Valley, (415) 388-2025
  • Pini Hardware in Novato, (415) 892-1577 
  • Shamrock Materials in San Rafael (415), 455-1575
  • Water Components in San Rafael, (415) 451-1780 

Note: This list is provided for information only and does not constitute an endorsement of these companies.

As always, write to me at ksears@marincounty.org and stay safe while driving, walking and biking around the community.