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Summary of Highest Tides, Chiswick Mall, 2021

This page is a quick guide to this and next year’s highest tides on and around Chiswick Mall. Parts of the roadway in Chiswick Mall are often flooded, as the main flood defence is along the building line, leaving the road unprotected. Flooding of property, as distinct from front gardens and the roadway, is not normally expected. A flood alert or warning would be issued if property was threatened.

This year, as well as the usual "London Bridge" tide heights, I have included the predicted height in metres Above Ordnance Datum (mAOD) on Chiswick Mall, which enables a comparison with local land heights. For more information about AOD heights, see the AOD page.

Below are three tables:

- Table 1 shows the dates on which some flooding of the road is likely (predicted tide level of at least 4.0 mAOD at Chiswick Mall).

- Table 2 gives more details of the highest tides (predicted level of at least 4.3 mAOD) when more extensive flooding of the roadway can be expected. Tides predicted to reach at least 4.5 mAOD are shown in bold.

- Table 3 lists the known AOD land heights on or near Chiswick Mall.

For full tide tables, listing all high and low tides for the year, click one of these links:

  Chiswick Mall annual tide-table 2021

  Chiswick Mall annual tide-table 2022


Table 1: Dates on which some flooding of Chiswick Mall is likely

2021
September8-12; 20-25
October6-11; 19-24
November4-9
December3-8
2022
to follow

Table 2: Details of highest tides when extensive flooding of Chiswick Mall is likely

The table below lists all the tides in Chiswick Mall up to December 2021 that are predicted to be 4.3m AOD or higher. Tide times are for the peak of the tide at Chiswick Mall (Chiswick Eyot) in local clock time - GMT or BST according to season. These times and heights are predictions only, and in practice may be influenced by actual river flow and the weather.

Date/time at Chiswick Mall Tide height
(LB*)
Tide height
(AOD*)
*   LB predicted height at London Bridge in metres above chart datum
  AOD predicted height at Chiswick Mall in metres Above Ordnance Datum
  Thu 9 Sep 2021    04:48  7.24.3
  Thu 9 Sep 2021    16:59  7.14.3
  Fri 10 Sep 2021    05:28  7.24.3
  Fri 10 Sep 2021    17:37  7.24.4
  Sat 11 Sep 2021    18:16  7.14.3
  Thu 7 Oct 2021    15:52  7.24.3
  Fri 8 Oct 2021    04:20  7.44.3
  Fri 8 Oct 2021    16:32  7.44.5
  Sat 9 Oct 2021    05:02  7.44.4
  Sat 9 Oct 2021    17:14  7.44.6
  Sun 10 Oct 2021    05:43  7.34.4
  Sun 10 Oct 2021    17:57  7.34.5
  Fri 5 Nov 2021    14:24  7.34.3
  Sat 6 Nov 2021    02:54  7.44.3
  Sat 6 Nov 2021    15:09  7.54.6
  Sun 7 Nov 2021    03:38  7.44.4
  Sun 7 Nov 2021    15:55  7.54.6
  Mon 8 Nov 2021    04:22  7.24.4
  Mon 8 Nov 2021    16:42  7.34.5
  Sat 4 Dec 2021    14:03  7.34.3
  Sun 5 Dec 2021    14:53  7.44.4
  Mon 6 Dec 2021    03:20  7.34.3
  Mon 6 Dec 2021    15:42  7.44.5
  Tue 7 Dec 2021    16:33  7.34.5


Table 3: Known AOD land heights on Chiswick Mall
Locations are in the middle of the carriageway unless otherwise noted.
o/s = outside

mAOD  Location
4.9  at junction with Church Street, opposite slipway, near slipway edge of carriageway
4.0  o/s Eynham House
4.1  at junction with Chiswick Lane South
4.70  OS Benchmark on brewery wall just inside Chiswick Lane South
4.2  o/s West boundary of Oak Cottage
4.7  o/s Strawberry House
4.5  in line with footway at east of The Osiers, in line with The Cottage
4.3  o/s Island House
5.5  o/s entrance to Miller's Court

© 2021 Richard Jennings


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