Winter Storm and Flooding Resources

Winter Storms Quick Links

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The City of Mill Valley strongly encourages residents to prepare for upcoming winter storms, power outages, and all high tide events. We recommend that residents prepare themselves and their property from the possibility of wind and water damage. Click here for weather conditions.


Some Tips to Prepare for Flooding:

Move vehicles to higher ground, especially in flood-prone areas.

Move items stored in low-lying areas, such as basements or other areas that have flooded in the past.

Drive with Caution:When driving in the rain, use extra caution and always have your headlights on. Remember, if you turn on your windshield wipers, turn on your headlights. Please obey the speed limits and follow other traffic at a safe distance.

Downed Power Lines

If you see a downed power line call 911 immediately. For more safety information about downed power lines click here.

Creek Levels

 Click here for a direct link to the Arroyo Corte Madera Sensor Page. (Click "Sites" > "Arroyo Corte Madera del Presidio" > "Stage")

Stock up on Sandbags

We urge residents to initiate their winter preparedness measures early in the season by seeking sand and sandbags should they need them. Sand and bags can be purchased at local hardware stores.Watch a video on how to fill and place sandbags.

City Supplied Sandbags (unfilled)
Residents or business owners may also pick up unfilled sand bags at:

Mill Valley Main Fire Station 7
(Public Safety Building), 1 Hamilton Drive.
Limit of 10 sandbags per household or business.

Sand may be located at the following locations:*

  1. Hauke Park parking lotnext to Public Safety Building, 1 Hamilton Drive
  2. Thalia parking lot at Boyle Parkoff of East Blithedale Avenue
  3. Parking area on Molino Ave., behind Old Mill Park (approximately 100' yards east of Molino Avenue/Cascade Way)

*These locations have limited stockpiles of sand for emergency use during the rainy season. To use these stockpiles,you must supply your own labor, shovels and support.

Please note that the safety of Mill Valley citizens is the first priority of City work crews, and that replenishing the sand pile and bags may become a lower priority during a storm event. If you have questions or comments please call Department of Public Works at 388-4033 or the Fire Department at 389-4130.

Prepare for Power Outages

Have battery-operated radios with fresh batteries readyfor updates on storm conditions and power outages. Have battery-operated flashlights with extra batteries on hand.

Do not use candles because of the risk of fire.If you must use candles, extreme caution is urged. Do not use candles near drapes or under lampshades. Keep candles away from small children, and do not leave candles unattended.

If you have a stand-by generator, inform PG&E and make sure that it's installed safely.If it's not, you risk damaging your property and endangering PG&E line workers who may be working on power lines some distance from your home. Information on the safe installation of generators can be found on the PG&E website at

If your power goes out, unplug or turn off all electric appliances, including computers and printers.Otherwise, when power is restored, several appliances may come back on at once and overload your circuits or hot appliances may come on while you're away or asleep and pose a fire hazard. Leave a single lamp on to alert you when power returns. Turn your appliances back on one at a time when conditions return to normal.

If you come across a downed power line, stay away from it and call 911.In the event of a power outage, information on the outage can be obtained at (800) 743-5000.

Before your power goes out, make ice in 2-liter soda bottles.Use empty, clean plastic milk jugs and 2-liter soda bottles or blue ice from your picnic cooler to keep your food cold. With minimal opening and shutting of doors, food should remain usable for up to two days.

Stay Informed

In an emergency, communication is crucial to the safety of all residents and businesses. Please bookmark or sign up for the communications methods listed below. Regular updates to a storm event will be posted on the City of Mill Valley website.

 Alert Marin Enter your telephone number and email address and this County-wide program will give you a call, text, or email if there is an emergency in our area.
Nixle The Mill Valley Police Department uses Nixle to send timely public safety alerts to your phone or email. 
MVConnect  The City of Mill Valley Newsletter will be sent directly to your inbox. We include updates on major storms entering the area.
 Sign up for eNotifications  Receive notifications in your inbox. Select “Emergency Notifications” and “Traffic Conditions and Road Closures” for information. 
  NextDoor The City regularly provides updates to this  private, neighborhood-based social network. The City can issue emergency alerts that will go directly to your email inbox.
 Facebook The City provides regular updates to Facebook including emergency preparedness news.
City Twitter Check the City of Mill Valley Twitter account for real-time updates. 
 MVPD Twitter The Mill Valley Police Department is often first on-scene and updates their Twitter feed with real-time information.


Helpful Information

Who to Call During a Storm
Please call (415) 472-0911 for all storm related calls. If it is an emergency call 911.

Report a Power Outage
Call 1-800-743-5002 to report a power outage.