San Anselmo flood forecast
Floods today 10:05 AM–12:45 PM
Minor flooding possible
Now
Today 9:48 AM
Tide
6.5 ft
Floods today 10:05 AM–12:45 PM
Peak 11:18 AMIn short
In San Anselmo, roads start to flood when the water at NOAA's Corte Madera Creek station reaches about 6.6 ft (MLLW). Next flood: Mon, Nov 9, 10:05 AM–12:45 PM PST (minor flooding possible), with 2 streets forecast to flood at the peak: Francisco Blvd W and Francisco Blvd E.
Next 7 days
Flood windows
Today
Nov 9
10:05 AM–12:45 PMPossiblePeak 7.0 ft · Francisco Blvd W, Francisco Blvd E
Tomorrow
Nov 10
10:30 AM–1:20 PMPossiblePeak 7.0 ft · Francisco Blvd W, Francisco Blvd E
Wed
Nov 11
11:00 AM–1:40 PMPossiblePeak 7.0 ft · Francisco Blvd W, Francisco Blvd E
Thu
Nov 12
11:45 AM–1:55 PMPossiblePeak 6.9 ft · Francisco Blvd W, Francisco Blvd E
Fri
Nov 13
12:50–2:10 PMPossiblePeak 6.7 ft · Francisco Blvd W
Tap a day for the street-by-street forecast and a share card. Times are America/Los Angeles time.
At the Richmond gauge, our forecast a day ahead typically landed within 2 inches of the real water over the past year. The tide tables alone: 13.5. See the results
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 Corte Madera Creek station with the elevation of every road segment in San Anselmo. 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 Richmond 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 9414874 (Corte Madera Creek). Updated 9:51 AM.
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FAQ
San Anselmo flooding: questions, answered
Which roads flood in San Anselmo?
The worst flood forecast in the next 30 days is Wed, Nov 25, 9:05 AM–3:25 PM PST (severe flooding likely). At its peak, 11 streets are forecast to flood: Francisco Blvd W, Francisco Blvd E, Redwood Hwy, Woodland Ave, Cornell Ave, Berens Dr, Tulane Dr, Grand Ave, Sherwood Ct, Third St and 1 more street. The live map shows every street, hour by hour.
When is the next flood in San Anselmo?
Mon, Nov 9, 10:05 AM–12:45 PM PST: minor flooding possible, peaking around 11:18 AM. FloodRoute forecasts 21 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 San Anselmo?
Roads start to flood when the water at NOAA's Corte Madera Creek station reaches about 6.6 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 San Anselmo?
Tue, Nov 24 at 10:43 AM PST, with water expected around 8.0 ft at NOAA's Corte Madera Creek station. King tides are the year's highest predicted tides: FloodRoute uses the top 5% of high tides in NOAA's tide tables, 6.8 ft or more at NOAA's Corte Madera Creek station, about 18 days a year. Water often runs above the tide tables for weeks at a time (warm water, El Niño, storms). FloodRoute's flood forecasts include that, but it doesn't turn an ordinary high tide into a king tide.
How can I get flood alerts for San Anselmo?
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 San Anselmo flood calendar and flood days appear on your calendar automatically.
How accurate is the San Anselmo flood forecast?
It's an estimate built from NOAA tide predictions for the Corte Madera Creek station, corrected with live readings from the NOAA Richmond gauge, and the measured elevation of every road segment in San Anselmo. San Anselmo is in Beta: community reports are still confirming which streets flood. Wind, storm surge and blocked drains can change what actually floods. Never drive through flood water.