Latest Blom coastal erosion survey mapping

Coastal erosion is a very real and serious problem for parts of the UK’s coastline. Up to 180cm of land can be lost to the sea within just one year, and for the residents along the coast this is a desperate concern.

We at Blom are very proud of our long standing working relationships and this is a good example of our aerial photography capacity. We’ve been providing aerial photography of the Anglian coastline to the Environment Agency since around 1992 to aid them with the monitoring of erosion that occurs along the 1,600 sq km stretch of coastline between Grimsby and Southend on Sea.

It’s vital that in areas of high coastal erosion the rate of loss is monitored to predict short and long term change patterns, plan new coastal defences and how all this will affect neighbouring settlements, agricultural land and natural habitats.
The coastal monitoring programme combines a number of survey techniques and services including aerial photography, mapping and land survey; resulting data is then analysed by experts to provide predictions for future erosion based on previous historical patterns. We then provide the Environment Agency with orthorectified 25cm resolution images in 1km² tiles with the associated metadata and survey reports, to aid the coastal monitoring teams with their analysis.

The images below captured by Blom in both 1992 and 2007, show the alarming rate of change on one section of the Anglian coast.

A piece of the Anglian coastline from 1992

This image captured in 1992 shows the relatively straight coastline.

A piece of the Anglian coastline from 2007

This image from the same area, captured in 2007 shows how the erosion has caused the coastline to curve in, resulting in the loss of buildings and land. By comparing the imagery timeline provided by Blom, the technicians can predict how much coast will be affected in the future and also in which direction this erosion will move.

Thanks to the Shoreline Management Group, Environment Agency, (Anglian Region)