This page summarises data collected since the start in 2003 of regular measurement of cliff loss at all monitoring locations along the coast as conducted by East Riding of Yorkshire Council (ERYC).
Also listed are total losses and annual averages for the period from the first Ordnance Survey (carried out between 1852 and 1854) to the latest full year.
The map shows Shoreline Management Plan SMP3 units, previously called bands, together with corresponding groups of erosion monitoring profiles.
Cliff recession is monitored along these profiles, which are notional lines spaced at 500 metre intervals (there are three exceptions) along the coastline and which extend from a point a little distance behind the cliff to a position out to sea. Details of locations, intervals between profiles, and cliff heights may be obtained from the coordinates spreadsheet.
A background to data collection is available at data in detail.
Measurements are carried out in autumn and spring in order to capture change over summer and winter. Sometimes it is more convenient for comparative purposes to work in complete years, when each year is deemed to run from spring of one year to spring the following year.
Monitoring profiles are presented in numerical order, from north to south, with brief descriptions of locations.
Where there are incomplete runs of data since 1854, the total in the final section reflects what is available, and the annual average is calculated accordingly.
All measurements are given in metres. There may be the occasional insignificant rounding difference.
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The above summary applies to cliff loss at monitoring profiles, which in effect represent sampling points. However, a major loss may occur anywhere between profiles. Such an event can be identified by comparing cliff lines. A separate summary is provided at the following link.
cliff lines
An average rate of loss for the entire coastline over the period 2003 to 2023 (21 years) is 1.42 metres per year.
If protected sections are removed from the total length, the rate for unprotected cliff during the same period is 1.68 metres per year
Winter accounts for 70.10% of total losses, and summer 29.90%.
Average rates of erosion can mask wide annual variations. The chart below depicts the period of the summary.
For comparative seasonal variation see activity index.
Page prepared by Brian Williams in 2013 and updated as indicated.