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Baltimore, Fort McHenry: water level history
Record1903–2025123 years
Sea level trend3.30 mm/yrNo. 31 of 88
Great diurnal range0.51 mNo. 97
Highest water level2.48 m2003-09-19
Annual mean water level vs. period average (cm)
Bars are relative to the lowest year on record.
Top 10 monthly highest water levels
| Month | Highest (m above MSL) |
|---|---|
| September 2003 | 2.240 |
| August 1933 | 2.102 |
| August 1955 | 1.705 |
| October 1954 | 1.431 |
| January 2024 | 1.377 |
| August 1915 | 1.370 |
| September 1979 | 1.334 |
| September 1996 | 1.330 |
| November 1985 | 1.321 |
| August 2024 | 1.263 |
- 2025
- 2024
- 2023
- 2022
- 2021
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
- 2012
- 2011
- 2010
- 2009
- 2008
- 2007
- 2006
- 2005
- 2004
- 2003
- 2002
- 2001
- 2000
- 1999
- 1998
- 1997
- 1996
- 1995
- 1994
- 1993
- 1992
- 1991
- 1990
Times and heights are NOAA astronomical predictions and do not include weather effects. Times are station local time (incl. daylight saving), heights in metres above MLLW. Not for navigation.
About this page
Monthly mean water levels at Baltimore, Fort McHenry since 1903. Long-term sea level trend: 3.30 mm per year.