# Boston king tides and high water in 2004

> In 2004, NOAA's Boston tide gauge recorded water high enough for FloodRoute's model to put at least one Boston road at risk on 24 days. The highest was 12.76 ft on Monday, December 13, 2004, 0.85 ft above the tide tables, with 14 roads at risk, including Chelsea Street, William T. Morrissey Boulevard and Marginal Street.

**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 (24)

| Date | High water (Boston gauge, ft MLLW) | vs tide tables | Roads at risk | Severity | Deepest streets (model) |
|---|---|---|---|---|---|
| Feb 19, 2004 | 12.01 | +1.20 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Feb 21, 2004 | 12.29 | +1.48 ft | 6 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Apr 9, 2004 | 11.81 | +0.50 ft | 2 | Possible | Chelsea Street |
| May 6, 2004 | 11.88 | +0.04 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| May 7, 2004 | 11.97 | +0.11 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jun 1, 2004 | 12.11 | +0.60 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jun 2, 2004 | 12.29 | +0.40 ft | 6 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jun 4, 2004 | 12.12 | +0.06 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jun 5, 2004 | 11.95 | −0.06 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jun 6, 2004 | 11.85 | +0.09 ft | 2 | Possible | Chelsea Street |
| Jul 1, 2004 | 11.93 | +0.10 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jul 3, 2004 | 12.11 | +0.15 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jul 4, 2004 | 12.21 | +0.32 ft | 5 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jul 5, 2004 | 11.86 | +0.20 ft | 2 | Possible | Chelsea Street |
| Jul 31, 2004 | 11.90 | +0.24 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Aug 2, 2004 | 11.87 | +0.25 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Aug 3, 2004 | 11.78 | +0.38 ft | 2 | Possible | Chelsea Street |
| Sep 29, 2004 | 11.82 | +1.19 ft | 2 | Possible | Chelsea Street |
| Oct 15, 2004 | 11.90 | +0.75 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Nov 13, 2004 | 12.28 | +0.63 ft | 6 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Dec 11, 2004 | 12.48 | +0.96 ft | 10 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Dec 12, 2004 | 12.62 | +0.80 ft | 12 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Dec 13, 2004 | 12.76 | +0.85 ft | 14 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Dec 14, 2004 | 11.86 | +0.08 ft | 2 | Possible | Chelsea Street |

[All Boston history](https://floodroute.com/ma/boston/history.md) · [Live forecast](https://floodroute.com/ma/boston.md)

Data: [CSV](https://floodroute.com/data/history/ma/boston.csv) · [JSON](https://floodroute.com/data/history/ma/boston.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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