# Mill Valley king tides and high water in 2009

> In 2009, NOAA's San Francisco tide gauge recorded water high enough for FloodRoute's model to put at least one Mill Valley road at risk on 49 days. The highest was 7.42 ft on Monday, June 22, 2009, 0.35 ft above the tide tables, with 10 roads at risk, including Ryan Avenue, Plymouth Avenue and Park Terrace.

**Estimates, not records of actual flooding.** Each day is NOAA's verified high water at the tide gauge, run through FloodRoute's flood model on today's roads and elevations, in dry weather. Drains, levees, tide gates, rain, road changes and elevation error all mean real conditions differed. Not for property, real-estate, insurance, lending, engineering or legal decisions.

## Every day with roads at risk (49)

| Date | High water (San Francisco gauge, ft MLLW) | vs tide tables | Roads at risk | Severity | Deepest streets (model) |
|---|---|---|---|---|---|
| Jan 8, 2009 | 6.63 | −0.22 ft | 1 | Possible | Sycamore Avenue |
| Jan 9, 2009 | 6.71 | −0.37 ft | 1 | Possible | Sycamore Avenue |
| Jan 10, 2009 | 6.72 | −0.46 ft | 1 | Possible | Sycamore Avenue |
| Feb 6, 2009 | 6.92 | +0.31 ft | 1 | Possible | Sycamore Avenue |
| Feb 7, 2009 | 6.96 | +0.18 ft | 1 | Possible | Sycamore Avenue |
| Feb 8, 2009 | 7.03 | +0.22 ft | 1 | Possible | Sycamore Avenue |
| Feb 9, 2009 | 6.78 | +0.11 ft | 1 | Possible | Sycamore Avenue |
| Feb 16, 2009 | 6.64 | +1.07 ft | 1 | Possible | Sycamore Avenue |
| May 22, 2009 | 6.70 | +0.35 ft | 1 | Possible | Sycamore Avenue |
| May 23, 2009 | 6.84 | +0.25 ft | 1 | Possible | Sycamore Avenue |
| May 24, 2009 | 6.86 | +0.14 ft | 1 | Possible | Sycamore Avenue |
| May 26, 2009 | 6.92 | +0.23 ft | 1 | Possible | Sycamore Avenue |
| May 27, 2009 | 6.85 | +0.35 ft | 1 | Possible | Sycamore Avenue |
| Jun 19, 2009 | 6.73 | +0.24 ft | 1 | Possible | Sycamore Avenue |
| Jun 20, 2009 | 6.97 | +0.19 ft | 1 | Possible | Sycamore Avenue |
| Jun 21, 2009 | 7.15 | +0.16 ft | 1 | Likely | Sycamore Avenue |
| Jun 22, 2009 | 7.42 | +0.35 ft | 10 | Likely | Ryan Avenue, Plymouth Avenue, Park Terrace |
| Jun 24, 2009 | 7.40 | +0.44 ft | 9 | Likely | Ryan Avenue, Plymouth Avenue, Park Terrace |
| Jun 25, 2009 | 6.84 | +0.19 ft | 1 | Possible | Sycamore Avenue |
| Jul 18, 2009 | 6.81 | +0.10 ft | 1 | Possible | Sycamore Avenue |
| Jul 19, 2009 | 7.11 | +0.13 ft | 1 | Possible | Sycamore Avenue |
| Jul 20, 2009 | 7.17 | +0.03 ft | 1 | Likely | Sycamore Avenue |
| Jul 21, 2009 | 7.02 | −0.13 ft | 1 | Possible | Sycamore Avenue |
| Jul 23, 2009 | 6.76 | −0.20 ft | 1 | Possible | Sycamore Avenue |
| Aug 16, 2009 | 6.62 | +0.02 ft | 1 | Possible | Sycamore Avenue |
| Aug 17, 2009 | 6.87 | +0.07 ft | 1 | Possible | Sycamore Avenue |
| Aug 18, 2009 | 7.04 | +0.15 ft | 1 | Possible | Sycamore Avenue |
| Aug 19, 2009 | 6.92 | +0.11 ft | 1 | Possible | Sycamore Avenue |
| Oct 17, 2009 | 6.63 | +0.29 ft | 1 | Possible | Sycamore Avenue |
| Oct 18, 2009 | 6.79 | +0.37 ft | 1 | Possible | Sycamore Avenue |
| Oct 19, 2009 | 6.96 | +0.58 ft | 1 | Possible | Sycamore Avenue |
| Nov 3, 2009 | 6.77 | +0.31 ft | 1 | Possible | Sycamore Avenue |
| Nov 4, 2009 | 6.92 | +0.40 ft | 1 | Possible | Sycamore Avenue |
| Nov 5, 2009 | 6.70 | +0.24 ft | 1 | Possible | Sycamore Avenue |
| Nov 30, 2009 | 6.62 | +0.16 ft | 1 | Possible | Sycamore Avenue |
| Dec 1, 2009 | 6.99 | +0.30 ft | 1 | Possible | Sycamore Avenue |
| Dec 2, 2009 | 7.14 | +0.30 ft | 1 | Likely | Sycamore Avenue |
| Dec 3, 2009 | 7.09 | +0.24 ft | 1 | Possible | Sycamore Avenue |
| Dec 4, 2009 | 6.77 | +0.05 ft | 1 | Possible | Sycamore Avenue |
| Dec 5, 2009 | 6.67 | +0.27 ft | 1 | Possible | Sycamore Avenue |
| Dec 12, 2009 | 7.06 | +0.64 ft | 1 | Possible | Sycamore Avenue |
| Dec 13, 2009 | 7.09 | +0.58 ft | 1 | Possible | Sycamore Avenue |
| Dec 14, 2009 | 6.75 | +0.25 ft | 1 | Possible | Sycamore Avenue |
| Dec 15, 2009 | 6.73 | +0.30 ft | 1 | Possible | Sycamore Avenue |
| Dec 16, 2009 | 6.60 | +0.29 ft | 1 | Possible | Sycamore Avenue |
| Dec 28, 2009 | 6.68 | +0.30 ft | 1 | Possible | Sycamore Avenue |
| Dec 29, 2009 | 6.93 | +0.25 ft | 1 | Possible | Sycamore Avenue |
| Dec 30, 2009 | 7.12 | +0.19 ft | 1 | Likely | Sycamore Avenue |
| Dec 31, 2009 | 7.06 | −0.01 ft | 1 | Possible | Sycamore Avenue |

[All Mill Valley history](https://floodroute.com/ca/mill-valley/history.md) · [Live forecast](https://floodroute.com/ca/mill-valley.md)

Data: [CSV](https://floodroute.com/data/history/ca/mill-valley.csv) · [JSON](https://floodroute.com/data/history/ca/mill-valley.json) · Open Database License (ODbL) 1.0 (https://opendatacommons.org/licenses/odbl/1-0/) · Credit: FloodRoute (floodroute.com), © OpenStreetMap contributors, NOAA CO-OPS · [All towns](https://floodroute.com/data.md)

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Web version: https://floodroute.com/ca/mill-valley/history/2009 · Site index for AI agents: https://floodroute.com/llms.txt · Every page is available as Markdown: add `.md` to its URL.

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