# San Anselmo flood forecast

California · Beta

**Flooding likely now** · until 12:50 PM

> In San Anselmo, roads start to flood when the water at NOAA's Corte Madera Creek station reaches about 6.6 ft (MLLW). Minor flooding possible in San Anselmo now, until 12:50 PM PST, with 2 streets forecast to flood at the peak: Francisco Blvd W and Francisco Blvd E.

- Tide now: 7.1 ft, falling
- Next king tide: Tue, Nov 24, 10:43 AM PST · 8.0 ft
- Surge +1.2 ft: water running above the tide tables · Richmond gauge, 10:00 AM
- Live map and tide scrubber: https://floodroute.com/ca/san-anselmo

## Flood windows: next 7 days

| Day | Time | Forecast | Peak tide | Streets |
|---|---|---|---|---|
| [Mon, Nov 9](https://floodroute.com/ca/san-anselmo/2026-11-09.md) | 10:00 AM–12:50 PM PST | Minor flooding possible | 7.1 ft | Francisco Blvd W, Francisco Blvd E |
| [Tue, Nov 10](https://floodroute.com/ca/san-anselmo/2026-11-10.md) | 10:20 AM–1:20 PM PST | Minor flooding possible | 7.1 ft | Francisco Blvd W, Francisco Blvd E |
| [Wed, Nov 11](https://floodroute.com/ca/san-anselmo/2026-11-11.md) | 11:00 AM–1:40 PM PST | Minor flooding possible | 7.0 ft | Francisco Blvd W, Francisco Blvd E |
| [Thu, Nov 12](https://floodroute.com/ca/san-anselmo/2026-11-12.md) | 11:45 AM–1:55 PM PST | Minor flooding possible | 6.9 ft | Francisco Blvd W, Francisco Blvd E |
| [Fri, Nov 13](https://floodroute.com/ca/san-anselmo/2026-11-13.md) | 12:50–2:10 PM PST | Minor flooding possible | 6.7 ft | Francisco Blvd W |

## Later in the next 30 days

| Day | Time | Forecast | Peak tide | Streets |
|---|---|---|---|---|
| [Sat, Nov 21](https://floodroute.com/ca/san-anselmo/2026-11-21.md) | 7:45–9:40 AM PST | Minor flooding possible | 6.8 ft | Francisco Blvd W, Francisco Blvd E |
| [Sun, Nov 22](https://floodroute.com/ca/san-anselmo/2026-11-22.md) | 7:40–11:20 AM PST | Flooding likely | 7.3 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy |
| [Mon, Nov 23](https://floodroute.com/ca/san-anselmo/2026-11-23.md) | 8:00 AM–12:55 PM PST | Flooding likely | 7.7 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy +3 more |
| [Tue, Nov 24](https://floodroute.com/ca/san-anselmo/2026-11-24.md) | 8:20 AM–2:20 PM PST | Flooding likely · king tide | 8.0 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy +6 more |
| [Wed, Nov 25](https://floodroute.com/ca/san-anselmo/2026-11-25.md) | 9:05 AM–3:25 PM PST | Severe flooding likely · king tide | 8.1 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy +8 more |
| [Thu, Nov 26](https://floodroute.com/ca/san-anselmo/2026-11-26.md) | 10:00 AM–4:10 PM PST | Flooding likely · king tide | 8.1 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy +7 more |
| [Fri, Nov 27](https://floodroute.com/ca/san-anselmo/2026-11-27.md) | 11:05 AM–4:30 PM PST | Flooding likely | 7.8 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy +4 more |
| [Sat, Nov 28](https://floodroute.com/ca/san-anselmo/2026-11-28.md) | 12:30–4:20 PM PST | Flooding likely | 7.4 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy |
| [Sun, Nov 29](https://floodroute.com/ca/san-anselmo/2026-11-29.md) | 2:30–3:50 PM PST | Minor flooding possible | 6.7 ft | Francisco Blvd W |
| [Wed, Dec 2](https://floodroute.com/ca/san-anselmo/2026-12-02.md) | 6:40–7:40 AM PST | Minor flooding possible | 6.7 ft | Francisco Blvd W |
| [Thu, Dec 3](https://floodroute.com/ca/san-anselmo/2026-12-03.md) | 6:50–8:55 AM PST | Minor flooding possible | 6.8 ft | Francisco Blvd W, Francisco Blvd E |
| [Fri, Dec 4](https://floodroute.com/ca/san-anselmo/2026-12-04.md) | 7:15–9:55 AM PST | Minor flooding possible | 7.0 ft | Francisco Blvd W, Francisco Blvd E |
| [Sat, Dec 5](https://floodroute.com/ca/san-anselmo/2026-12-05.md) | 7:40–10:50 AM PST | Flooding likely | 7.1 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy |
| [Sun, Dec 6](https://floodroute.com/ca/san-anselmo/2026-12-06.md) | 8:05–11:40 AM PST | Flooding likely | 7.2 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy |
| [Mon, Dec 7](https://floodroute.com/ca/san-anselmo/2026-12-07.md) | 8:35 AM–12:15 PM PST | Flooding likely | 7.3 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy |
| [Tue, Dec 8](https://floodroute.com/ca/san-anselmo/2026-12-08.md) | 9:05 AM–12:45 PM PST | Flooding likely | 7.2 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy |
| [Wed, Dec 9](https://floodroute.com/ca/san-anselmo/2026-12-09.md) | 9:40–11:25 AM PST | Flooding likely | 7.2 ft | Francisco Blvd W, Francisco Blvd E, Redwood Hwy |

## 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.

**Estimates only.** Never drive through flood water — six inches can float a car. Follow local authorities.

Tide source: [NOAA station 9414874 (Corte Madera Creek)](https://tidesandcurrents.noaa.gov/noaatidepredictions.html?id=9414874). Updated 11:24 AM PST. Times are America/Los Angeles time.

## Calendar, alerts and embeds

- Calendar feed of San Anselmo flood days (iCal, updates itself): https://floodroute.com/cal/ca/san-anselmo.ics
- FloodRoute for iPhone (free; Pro adds street-level alerts for your saved places and commute): https://apps.apple.com/app/id6757653475
- Embed this live map on a news or neighborhood site: https://floodroute.com/press#embed

## Frequently asked questions

### 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](https://floodroute.com/ca/san-anselmo) shows every street, hour by hour.

### When is the next flood in San Anselmo?

Now: minor flooding possible until 12:50 PM PST. FloodRoute forecasts 21 more flood windows in the next 30 days. See the [street-by-street forecast for that day](https://floodroute.com/ca/san-anselmo/2026-11-09).

### 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](https://floodroute.com/cal/ca/san-anselmo.ics) 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.

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Web version: https://floodroute.com/ca/san-anselmo · Site index for AI agents: https://floodroute.com/llms.txt · Every page is available as Markdown: add `.md` to its URL.

FloodRoute provides estimates only. Never drive or walk through flood water. © Axiomic, LLC · marc@floodroute.com