River Deveron Salmon Catches 2000 to 2009

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On average, since year 2000 the Deveron is the fifth most productive salmon river in Scotland, (having just overtaken the Kyle of Sutherland system) however, as the chart below shows, it is a subject to large fluctuations in catches year on year, probably due to its 'spatey' nature. The trend shows that the Deveron's salmon catches are also improving more quickly than the Scottish average (steeper line of best fit).

River Deveron salmon rod catch trend compared to the total for all Scottish rivers i.e. 'River Scotland'.

 

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Comparing the River Deveron salmon catch against its neighbours

These charts show the salmon catch trend for the Deveron from 2000 to 2009 compared to its closest river neighbours. As you can see they (as expected) show a very close correlation.

Deveron v Spey

Deveron v Ythan

Is a four year cycle starting to develop? or were 2004 and 2008 wet years and good for fishing! Clearly the Spey has less dramatic fluctuations - perhaps because less dependent on rainfall than the Ythan and Deveron. Whatever the case the geographic overprint is very strong - something that is remarkably consistent across all the countries we have studied. That is, neighbouring rivers follow each other closely! Which means, of course before conclusions are reached about salmon populations look over the fence to see what is happening to them. If the trend is very different then it is likely that one has an in-river issue or bonus.