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Generally Venice only has high
water in Autumn and Winter and even then it is not every day that
the streets are flooded. However when a higher than usual tide is
expected in the city, sirens blare to warn the population so that
they can prepare themselves. Maps as posted at the boat stops
showing alternative pedestrian routes around the city that are
equipped with special footbridges to avoid the high water and to
reach the main parts of Venice.
Real time high
tides Center (prevision)
|
level
of tide |
% of
Venice that is flooded |
|
less than 80 cm. |
Normal
tide |
| at 100 cm |
4%
|
| at 110 cm |
12%
A emergency sound alert the Venetian |
| at 120 cm |
35% |
| at 130 cm |
70% |
| at 140 cm |
90% |
The causes of
the tides are the following:
- astronomic: the attraction of the sun and the moon cause
the regular rise and fall of the water: "6 hours rise and 6 hours
fall". You therefore have two maximums and two minimums a day.
- meteorological: a strong south-east wind ("scirocco") may
cause the tide to increase by as much as 1 meter.
- geographical: the seiche is a sort of long wave that runs
through the whole of the Adriatic Sea with a period of
approximately 22 hours.
SOME PICTURES
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|
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| San Marco square.... |
|
...with the high water ... |
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|
 |
| Very bad bad whether
... all the Gondoliers are at home ...
|
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You have to use the "passarele"
to walk when this happen ..... |
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|
 |
| Sometime it's
hard to live in venice ...high water, rain and cold |
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The only way to
go inside the church .... |
 |
|
 |
|
San Marco square view from the church. |
|
The Clock Tower |
| Top high tide values in Venice during
the period
|
from 1923 to October 31, 2008.
|
| 1. |
+ 194 cm |
November 4, 1966 |
| 2. |
+ 166 cm |
December 22, 1979 |
| 3. |
+158 cm |
February 1, 1986 |
| 4. |
+156 cm |
December 1, 2008 |
| 5. |
+151 cm |
November 12, 1951 |
| 6. |
+147 cm |
April 16, 1936 |
| 7. |
+147 cm |
November 16, 2002 |
| 8. |
+145 cm |
October 15, 1960 |
| 9. |
+144 cm |
November 3, 1968 |
| 10. |
+144 cm |
November 6, 2000 |
| 11. |
+142 cm |
December 8, 1992 |
| 12. |
+140 cm |
February 17, 1979 |
You can find more information here:
Comune di Venezia
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