" Statistics based on data which may or may not be accurate or a true representation of what is actually happening is presented as fact with people "on the ground" reporting a very different situation based on a whole range of factors - catches, fish seen, redds, spawning activity etc.

Statistics do have a part to play in fisheries management but so do the observations and records of anglers, bailiffs, gillies etc who are very often on the river every week or even day.

Reliability of data, reporting of catches, variance in correlation between catches and number of fish in the river could all mean that such stats as a means of assessing stocks in a river in any year could be way off the mark.

As has been said before, only reliable fish counters where all fish have to run over the counter can really tell us how many fish run a river in any year.