Essex Rivers Hub

Here at head office we have just received some data from a 1984 fisheries survey. The way in which this data was stored then is very different to now; the documents below show hand written data tables with counts of fish from unidentified points across three rivers in Essex. It is brilliant for us to receive these records are they allow us to look at changes in populations over time. These changes can be for a wide range of reasons.

Recent technical reports by the Environment Agency have showed some decline in fish in the three rivers for which we have this historical data. It is important to note however that fish do go through a natural cyclicity and we could currently be at a point where these fish populations are low and would be set to increase. These patterns are currently being investigated to help us gain a clearer understanding of the way in which our fish populations naturally fluctuate. With the majority of our rivers at Good or High standards, there is good scope for these populations to increase again.

Things that may prevent this natural increase in fish populations include reduced habitat availability and passage for the fish, decreased water quality and water quantity. In order to aid this increase in population, we can improve the passage for fish by removing barriers and re-profile channels, increase habitat availability and quality by profiling channels & utilising woody debris/ natural shading, improve river flow and control in channel vegetation.

Fisheries Survey River Pant

Fisheries Survey River Brain

Fisheries survey River Blackwater

If you have any historical records that you would like to share with us, or want to find out more then please do not hesitate to contact us.

Tuesday 7th October 2014.

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