# Boston king tides and high water in 1998

> In 1998, NOAA's Boston tide gauge recorded water high enough for FloodRoute's model to put at least one Boston road at risk on 33 days. The highest was 12.79 ft on Thursday, January 29, 1998, 1.36 ft above the tide tables, with 16 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 (33)

| Date | High water (Boston gauge, ft MLLW) | vs tide tables | Roads at risk | Severity | Deepest streets (model) |
|---|---|---|---|---|---|
| Jan 28, 1998 | 11.93 | +1.89 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jan 29, 1998 | 12.79 | +1.36 ft | 16 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jan 30, 1998 | 12.26 | +0.79 ft | 5 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jan 31, 1998 | 11.90 | +0.60 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Feb 24, 1998 | 12.67 | +2.29 ft | 14 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Feb 25, 1998 | 12.51 | +1.57 ft | 10 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Feb 26, 1998 | 12.09 | +0.70 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Feb 27, 1998 | 12.41 | +0.77 ft | 8 | Likely | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Feb 28, 1998 | 12.26 | +0.60 ft | 5 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Mar 1, 1998 | 12.02 | +0.70 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Mar 2, 1998 | 11.95 | +0.61 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Mar 3, 1998 | 12.05 | +0.90 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Mar 28, 1998 | 11.81 | +0.10 ft | 2 | Possible | Chelsea Street |
| Mar 31, 1998 | 11.92 | +0.14 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Apr 23, 1998 | 12.12 | +1.53 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Apr 25, 1998 | 11.93 | +0.15 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Apr 27, 1998 | 12.07 | ±0.00 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| May 24, 1998 | 11.88 | +0.01 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| May 25, 1998 | 12.22 | +0.19 ft | 5 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| May 27, 1998 | 12.13 | +0.16 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Jun 23, 1998 | 11.82 | +0.17 ft | 2 | Possible | Chelsea Street |
| Jun 25, 1998 | 11.82 | +0.26 ft | 2 | Possible | Chelsea Street |
| Jun 27, 1998 | 11.78 | +0.78 ft | 2 | Possible | Chelsea Street |
| Sep 8, 1998 | 12.25 | +0.67 ft | 5 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Sep 9, 1998 | 11.95 | +0.46 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Oct 9, 1998 | 11.82 | −0.01 ft | 2 | Possible | Chelsea Street |
| Nov 4, 1998 | 12.03 | −0.12 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Nov 5, 1998 | 11.97 | −0.33 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Nov 6, 1998 | 12.20 | +0.01 ft | 5 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Dec 3, 1998 | 12.07 | −0.01 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Dec 4, 1998 | 11.85 | −0.30 ft | 2 | Possible | Chelsea Street |
| Dec 5, 1998 | 11.98 | −0.01 ft | 4 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal Street |
| Dec 30, 1998 | 12.21 | +1.18 ft | 5 | Possible | Chelsea Street, William T. Morrissey Boulevard, Marginal 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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Web version: https://floodroute.com/ma/boston/history/1998 · 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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