So why is this happening? The bug catchers want to keep the water in the side pond clear so that the once abundant Damselflies and Drasgon flies will breed there. Well I lived near the flight in the 80's and I can tell you I didn't see any bug catchers there trying to fill it with clear water when it was dry and deralict. The canal and its environs are NOT a clear water area.
Gerald Walker, a amateur ecologist, who was interviewed by Narrowboat World said:
"It is not only the fish that cause the problem that is killing these lovely creatures, but boats too with their revving propellers that stir everything up for yards around.
"You get one boat going down causing problems, then the silt is just settling and another will come along, so why can't they all be made to come at once on a day to be arranged, which would be suitable for all. And I don't see why they can't be stopped altogether when the holiday season stops, and these ponds have been there for hundreds of years."
The side ponds were built to conserve water and they still do. Putting a whole pile of boats down in one day will most likely drain the flight and take a week to refill. It's not like the side ponds were built for wildlife. If the water is not clear enough for the flies they will go else where , it's not like there isnt any other water around.
BW's own Oda Dijksterhuis, British Waterways Heritage and Environment Manager, was beside himself when he said:
“This is a very exciting project for us. By removing these larger fish we hope to see an improvement in the water clarity in the side ponds."