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.

Dec 13, 2004: 14 roads at risk12.76 ft at the Boston gauge · 0.8 ft above the tide tables · deepest: Likely · model estimate

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.

Highest water in 2004

Highest water days in Boston in 2004
Date	High water · Boston	vs tide tables	Roads at risk	Deepest streets (model)
Dec 13, 2004	12.76 ft	+0.85 ft	14Likely	Chelsea Street, William T. Morrissey Boulevard, Marginal Street
Dec 12, 2004	12.62 ft	+0.80 ft	12Likely	Chelsea Street, William T. Morrissey Boulevard, Marginal Street
Dec 11, 2004	12.48 ft	+0.96 ft	10Likely	Chelsea Street, William T. Morrissey Boulevard, Marginal Street
Feb 21, 2004	12.29 ft	+1.48 ft	6Likely	Chelsea Street, William T. Morrissey Boulevard, Marginal Street
Jun 2, 2004	12.29 ft	+0.40 ft	6Likely	Chelsea Street, William T. Morrissey Boulevard, Marginal Street

Every day with roads at risk (24)

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