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Boston water levels in 1999
Annual rank29 / 105
vs. average4.5 cm
Highest monthly peak2.14 mJanuary 1999
Monthly mean vs. previous year
| Month | 1999 (cm) | 1998 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -7.8 | 8.4 | -16.2 | 2.14 |
| Feb | 3.7 | 15.1 | -11.4 | 1.93 |
| Mar | -0.1 | 6.1 | -6.2 | 2.01 |
| Apr | 5.5 | 11.4 | -5.9 | 2.11 |
| May | 2.2 | 13.2 | -11.0 | 2.03 |
| Jun | -0.2 | 10.0 | -10.2 | 2.13 |
| Jul | 4.6 | 7.3 | -2.7 | 2.04 |
| Aug | 6.2 | 0.8 | 5.4 | 1.97 |
| Sep | 4.6 | 6.5 | -1.9 | 2.01 |
| Oct | 0.5 | 1.1 | -0.6 | 2.04 |
| Nov | -3.1 | -1.2 | -1.9 | 2.11 |
| Dec | -3.1 | -4.6 | 1.5 | 2.07 |
Nearby years (cm vs. average)
-1.1
+3.1
+8.8
+7.6
+9.6
+4.5
+4.6
+4.1
+4.1
+6.2
+6.4
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1999 annual mean water level ranked 29 of 105 years (4.5 cm vs. the period average).