# Mill Valley flood forecast

California · part of [Marin County](https://floodroute.com/ca/marin-county.md)

**Clear today** · Next flood window Fri 9:40–11:00 AM

> In Mill Valley, roads start to flood when the tide at NOAA's Sausalito station passes about 6.1 ft (MLLW). Next flood: Fri, Oct 23, 9:40–11:00 AM PDT (minor flooding possible), with Sycamore Ave forecast to flood at the peak.

- Tide now: 5.1 ft, falling
- Next king tide: Sat, Oct 24, 10:49 AM PDT · 5.7 ft
- Bay running +1.1 ft above predicted tides · San Francisco gauge, 9:00 PM
- Live map and tide scrubber: https://floodroute.com/ca/mill-valley

## Flood windows: next 7 days

| Day | Time | Forecast | Peak tide | Streets |
|---|---|---|---|---|
| [Fri, Oct 23](https://floodroute.com/ca/mill-valley/2026-10-23.md) | 9:40–11:00 AM PDT | Minor flooding possible | 6.2 ft | Sycamore Ave |
| [Sat, Oct 24](https://floodroute.com/ca/mill-valley/2026-10-24.md) | 9:35 AM–12:10 PM PDT | Minor flooding possible · king tide | 6.5 ft | Sycamore Ave |
| [Sun, Oct 25](https://floodroute.com/ca/mill-valley/2026-10-25.md) | 9:40 AM–1:20 PM PDT | Flooding likely · king tide | 6.8 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Mon, Oct 26](https://floodroute.com/ca/mill-valley/2026-10-26.md) | 9:50 AM–2:25 PM PDT | Severe flooding likely · king tide | 7.1 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Tue, Oct 27](https://floodroute.com/ca/mill-valley/2026-10-27.md) | 10:15 AM–3:20 PM PDT | Severe flooding likely · king tide | 7.2 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Wed, Oct 28](https://floodroute.com/ca/mill-valley/2026-10-28.md) | 10:50 AM–4:10 PM PDT | Severe flooding likely · king tide | 7.2 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |

## Later in the next 30 days

| Day | Time | Forecast | Peak tide | Streets |
|---|---|---|---|---|
| [Thu, Oct 29](https://floodroute.com/ca/mill-valley/2026-10-29.md) | 11:35 AM–4:40 PM PDT | Severe flooding likely · king tide | 7.1 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Fri, Oct 30](https://floodroute.com/ca/mill-valley/2026-10-30.md) | 12:45–4:50 PM PDT | Flooding likely · king tide | 6.8 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Sat, Oct 31](https://floodroute.com/ca/mill-valley/2026-10-31.md) | 2:35–4:55 PM PDT | Minor flooding possible · king tide | 6.4 ft | Sycamore Ave |
| [Wed, Nov 4](https://floodroute.com/ca/mill-valley/2026-11-04.md) | 7:35–8:45 AM PST | Minor flooding possible | 6.2 ft | Sycamore Ave |
| [Thu, Nov 5](https://floodroute.com/ca/mill-valley/2026-11-05.md) | 7:35–9:55 AM PST | Minor flooding possible · king tide | 6.5 ft | Sycamore Ave |
| [Fri, Nov 6](https://floodroute.com/ca/mill-valley/2026-11-06.md) | 7:50–10:55 AM PST | Flooding likely · king tide | 6.7 ft | Sycamore Ave |
| [Sat, Nov 7](https://floodroute.com/ca/mill-valley/2026-11-07.md) | 8:10–11:45 AM PST | Flooding likely · king tide | 6.8 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Sun, Nov 8](https://floodroute.com/ca/mill-valley/2026-11-08.md) | 8:35 AM–12:15 PM PST | Flooding likely · king tide | 6.8 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Mon, Nov 9](https://floodroute.com/ca/mill-valley/2026-11-09.md) | 9:00 AM–12:40 PM PST | Flooding likely · king tide | 6.8 ft | Ryan Ave, Plymouth Ave, Park Ter +5 more |
| [Tue, Nov 10](https://floodroute.com/ca/mill-valley/2026-11-10.md) | 9:35 AM–12:50 PM PST | Flooding likely · king tide | 6.7 ft | Sycamore Ave |
| [Wed, Nov 11](https://floodroute.com/ca/mill-valley/2026-11-11.md) | 10:15 AM–1:00 PM PST | Minor flooding possible · king tide | 6.5 ft | Sycamore Ave |
| [Thu, Nov 12](https://floodroute.com/ca/mill-valley/2026-11-12.md) | 11:10 AM–1:10 PM PST | Minor flooding possible | 6.3 ft | Sycamore Ave |
| [Fri, Nov 20](https://floodroute.com/ca/mill-valley/2026-11-20.md) | 7:15–8:30 AM PST | Minor flooding possible | 6.2 ft | Sycamore Ave |

## How this forecast works

FloodRoute combines NOAA tide predictions for the Sausalito station with the elevation of every road segment in Mill Valley. 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.

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

Tide source: [NOAA station 9414806 (Sausalito)](https://tidesandcurrents.noaa.gov/noaatidepredictions.html?id=9414806). Updated 10:13 PM PDT. Times are America/Los Angeles time.

## Calendar, alerts and embeds

- Calendar feed of Mill Valley flood days (iCal, updates itself): https://floodroute.com/cal/ca/mill-valley.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 Mill Valley?

The worst flood forecast in the next 30 days is Wed, Oct 28, 10:50 AM–4:10 PM PDT (severe flooding likely). At its peak, 8 streets are forecast to flood: Ryan Ave, Plymouth Ave, Park Ter, Oxford Ave, Sycamore Ave, Valley Circle, Surrey Ave and Gomez Way. The [live map](https://floodroute.com/ca/mill-valley) shows every street, hour by hour.

### When is the next flood in Mill Valley?

Fri, Oct 23, 9:40–11:00 AM PDT: minor flooding possible, peaking around 10:24 AM. FloodRoute forecasts 18 more flood windows in the next 30 days. See the [street-by-street forecast for that day](https://floodroute.com/ca/mill-valley/2026-10-23).

### How high does the tide have to be to flood roads in Mill Valley?

Roads start to flood when the tide at NOAA's Sausalito station passes about 6.1 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 Mill Valley?

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 Mill Valley?

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 [Mill Valley flood calendar](https://floodroute.com/cal/ca/mill-valley.ics) and flood days appear on your calendar automatically.

### How accurate is the Mill Valley 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 Mill Valley. Wind, storm surge and blocked drains can change what actually floods. Never drive through flood water.

## Nearby in Marin County

- [Sausalito](https://floodroute.com/ca/sausalito.md)
- [Tam Junction](https://floodroute.com/ca/tam-junction.md)
- [Tiburon](https://floodroute.com/ca/tiburon.md)
- [Belvedere](https://floodroute.com/ca/belvedere.md)
- [Corte Madera](https://floodroute.com/ca/corte-madera.md)
- [Larkspur](https://floodroute.com/ca/larkspur.md)
- [San Rafael](https://floodroute.com/ca/san-rafael.md)
- [Santa Venetia](https://floodroute.com/ca/santa-venetia.md)
- [Novato](https://floodroute.com/ca/novato.md)

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FloodRoute provides estimates only. Never drive or walk through flood water. © Axiomic, LLC · contact@axiomic.ai