Marin County flood forecast
Clear today
Next flood window Fri 9:20–11:20 AM
Now
Today 11:12 PM
Tide
4.5 ft
In short
In Marin County, roads start to flood when the tide at NOAA's Sausalito station passes about 6.0 ft (MLLW). Next flood: Fri, Oct 23, 9:20–11:20 AM PDT (severe flooding likely), with 11 streets forecast to flood at the peak, including Fifer Ave, Paradise Dr and Bahia Way.
Next 7 days
Flood windows
Fri
Oct 23
9:20–11:20 AMSeverePeak 6.3 ft · Fifer Ave, Paradise Dr, Bahia Way +8 more
Sat
Oct 24
9:20 AM–12:25 PMSevereKing tidePeak 6.5 ft · Fifer Ave, Paradise Dr, Bahia Way +10 more
Sun
Oct 25
9:30 AM–1:40 PMSevereKing tidePeak 6.8 ft · Redwood Hwy, Edgewater Rd, Casa Buena Dr +127 more
Mon
Oct 26
9:45 AM–2:45 PMSevereKing tidePeak 7.1 ft · Redwood Hwy, Edgewater Rd, Casa Buena Dr +130 more
Tue
Oct 27
10:10 AM–3:45 PMSevereKing tidePeak 7.2 ft · Redwood Hwy, Edgewater Rd, Casa Buena Dr +135 more
Wed, Oct
Oct 28
10:40 AM–4:25 PMSevereKing tidePeak 7.2 ft · Redwood Hwy, Edgewater Rd, Casa Buena Dr +135 more
Tap a day for the street-by-street forecast and a share card. Times are America/Los Angeles time.
Since 1996
Marin County flood history
Days with roads at risk
1,972
since 1996
Record high water
8.38 ft
Feb 6, 1998
Days a year, then vs now
52 → 80
1996–05 vs 2016–25
Estimates only. Never drive through flood water — six inches can float a car. Follow local authorities.
How this forecast works
FloodRoute combines NOAA tide predictions for the Sausalito station with the elevation of every road segment in Marin County. When the predicted water level rises above a road's lowest point, it's marked — amber for possible, orange for likely, red for severe. The NOAA San Francisco gauge shows how far the water is actually running above or below the tide tables; that difference is carried into the forecast and fades over the following days. Recent rain raises the next 24 hours. After each high tide, streets stay marked a little longer, because water drains off the road more slowly than the tide falls.
Tide source: NOAA station 9414806 (Sausalito). Updated 11:12 PM.
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FAQ
Marin County flooding: questions, answered
Which roads flood in Marin County?
The worst flood forecast in the next 30 days is Wed, Oct 28, 10:40 AM–4:25 PM PDT (severe flooding likely). At its peak, 138 streets are forecast to flood: Redwood Hwy, Edgewater Rd, Casa Buena Dr, Yolo St, Conow St, Echo Ave, Sonoma St, Dolores St, Du Bois St, Irwin St and 128 more streets. The live map shows every street, hour by hour.
When is the next flood in Marin County?
Fri, Oct 23, 9:20–11:20 AM PDT: severe flooding likely, peaking around 10:24 AM. FloodRoute forecasts 19 more flood windows in the next 30 days. See the street-by-street forecast for that day.
How high does the tide have to be to flood roads in Marin County?
Roads start to flood when the tide at NOAA's Sausalito station passes about 6.0 ft (MLLW). Higher tides flood more streets, for longer. FloodRoute marks flooding as possible when the water is less than 0.5 ft above a road's low point, likely up to 1.5 ft, and severe at 1.5 ft or more.
When is the next king tide in Marin County?
Sat, Oct 24 at 10:49 AM PDT: a 5.7 ft high tide predicted at NOAA's Sausalito station. FloodRoute calls a high tide a king tide when it is more than 0.7 ft above the station's mean higher high water (MHHW).
How can I get flood alerts for Marin County?
The free FloodRoute iPhone app gives you a heads-up before flood windows in your home town; FloodRoute Pro adds street-level alerts for your saved places and your commute. Without the app, subscribe to the Marin County flood calendar and flood days appear on your calendar automatically.
How accurate is the Marin County flood forecast?
It's an estimate built from NOAA tide predictions for the Sausalito station, corrected with live readings from the NOAA San Francisco gauge, and the measured elevation of every road segment in Marin County. Wind, storm surge and blocked drains can change what actually floods. Never drive through flood water.
Marin County