# Petaluma flood forecast

California · Beta

**Floods today 12:00–1:45 PM** · Minor flooding possible

> In Petaluma, roads start to flood when the water at NOAA's Upper drawbridge, Petaluma River station reaches about 8.0 ft (MLLW). Next flood: Mon, Nov 9, 12:00–1:45 PM PST (minor flooding possible), with E Washington St forecast to flood at the peak.

- Tide now: 7.5 ft, rising
- Next king tide: Tue, Nov 24, 12:16 PM PST · 9.2 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/petaluma

## Flood windows: next 7 days

| Day | Time | Forecast | Peak tide | Streets |
|---|---|---|---|---|
| [Mon, Nov 9](https://floodroute.com/ca/petaluma/2026-11-09.md) | 12:00–1:45 PM PST | Minor flooding possible | 8.3 ft | E Washington St |
| [Tue, Nov 10](https://floodroute.com/ca/petaluma/2026-11-10.md) | 12:40–2:00 PM PST | Minor flooding possible | 8.2 ft | E Washington St |

## Later in the next 30 days

| Day | Time | Forecast | Peak tide | Streets |
|---|---|---|---|---|
| [Sat, Nov 21](https://floodroute.com/ca/petaluma/2026-11-21.md) | 10:00–10:55 AM PST | Minor flooding possible | 8.1 ft | E Washington St |
| [Sun, Nov 22](https://floodroute.com/ca/petaluma/2026-11-22.md) | 9:50 AM–12:30 PM PST | Flooding likely | 8.5 ft | E Washington St |
| [Mon, Nov 23](https://floodroute.com/ca/petaluma/2026-11-23.md) | 10:10 AM–2:00 PM PST | Flooding likely | 8.9 ft | E Washington St |
| [Tue, Nov 24](https://floodroute.com/ca/petaluma/2026-11-24.md) | 10:40 AM–3:20 PM PST | Flooding likely · king tide | 9.2 ft | E Washington St, Wilson St, Marina Ave +1 more |
| [Wed, Nov 25](https://floodroute.com/ca/petaluma/2026-11-25.md) | 11:20 AM–4:20 PM PST | Flooding likely · king tide | 9.3 ft | E Washington St, Wilson St, Marina Ave +2 more |
| [Thu, Nov 26](https://floodroute.com/ca/petaluma/2026-11-26.md) | 12:10–4:55 PM PST | Flooding likely · king tide | 9.2 ft | E Washington St, Wilson St, Marina Ave +1 more |
| [Fri, Nov 27](https://floodroute.com/ca/petaluma/2026-11-27.md) | 1:15–5:00 PM PST | Flooding likely | 8.9 ft | E Washington St |
| [Sat, Nov 28](https://floodroute.com/ca/petaluma/2026-11-28.md) | 2:45–4:45 PM PST | Minor flooding possible | 8.4 ft | E Washington St |
| [Fri, Dec 4](https://floodroute.com/ca/petaluma/2026-12-04.md) | 9:15–10:50 AM PST | Minor flooding possible | 8.2 ft | E Washington St |
| [Sat, Dec 5](https://floodroute.com/ca/petaluma/2026-12-05.md) | 9:40–11:45 AM PST | Minor flooding possible | 8.4 ft | E Washington St |
| [Sun, Dec 6](https://floodroute.com/ca/petaluma/2026-12-06.md) | 10:10 AM–12:25 PM PST | Minor flooding possible | 8.4 ft | E Washington St |
| [Mon, Dec 7](https://floodroute.com/ca/petaluma/2026-12-07.md) | 10:45 AM–12:55 PM PST | Minor flooding possible | 8.4 ft | E Washington St |
| [Tue, Dec 8](https://floodroute.com/ca/petaluma/2026-12-08.md) | 11:30 AM–1:20 PM PST | Minor flooding possible | 8.3 ft | E Washington St |

## How this forecast works

FloodRoute combines NOAA tide predictions for the Upper drawbridge, Petaluma River station with the elevation of every road segment in Petaluma. 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 9415584 (Upper drawbridge, Petaluma River)](https://tidesandcurrents.noaa.gov/noaatidepredictions.html?id=9415584). Updated 11:24 AM PST. Times are America/Los Angeles time.

## Calendar, alerts and embeds

- Calendar feed of Petaluma flood days (iCal, updates itself): https://floodroute.com/cal/ca/petaluma.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 Petaluma?

The worst flood forecast in the next 30 days is Wed, Nov 25, 11:20 AM–4:20 PM PST (flooding likely). At its peak, 5 streets are forecast to flood: E Washington St, Wilson St, Marina Ave, E Ct and H St. The [live map](https://floodroute.com/ca/petaluma) shows every street, hour by hour.

### When is the next flood in Petaluma?

Mon, Nov 9, 12:00–1:45 PM PST: minor flooding possible, peaking around 12:48 PM. FloodRoute forecasts 14 more flood windows in the next 30 days. See the [street-by-street forecast for that day](https://floodroute.com/ca/petaluma/2026-11-09).

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

Roads start to flood when the water at NOAA's Upper drawbridge, Petaluma River station reaches about 8.0 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 Petaluma?

Tue, Nov 24 at 12:16 PM PST, with water expected around 9.2 ft at NOAA's Upper drawbridge, Petaluma River station. King tides are the year's highest predicted tides: FloodRoute uses the top 5% of high tides in NOAA's tide tables, 7.8 ft or more at NOAA's Upper drawbridge, Petaluma River 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 Petaluma?

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 [Petaluma flood calendar](https://floodroute.com/cal/ca/petaluma.ics) and flood days appear on your calendar automatically.

### How accurate is the Petaluma flood forecast?

It's an estimate built from NOAA tide predictions for the Upper drawbridge, Petaluma River station, corrected with live readings from the NOAA Richmond gauge, and the measured elevation of every road segment in Petaluma. Petaluma 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/petaluma · 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