So that's the historical aspect of the Northern Rivers Alan over the 50+ years I've fished them, so yes they have been messed about with a little, but no where near the extent the southern rivers have been from what has been said above.
Interesting post. Talking of the effects of management on rivers, what can you say about the Dee?
I lived in Chester for two spells 1957 – 1975, then 1992 -2004, and this beautiful river was a bit of a mystery to anglers.
Before I got any tackle, I used to watch anglers catching plenty of fish in the last stretch above the weir marking the tidal – the Groves – and when I was 11 or so I saw an angler put back a net of roach from an overnight session the likes of which I’ve not seen anywhere since – 20-odd fish over a pound, some near two. By the time I was equipped to fish, the fish had largely disappeared from the lower stretches. An angler won a qualifying match for a Danish final with a catch of an eel and a small flounder, for instance, and a few small dace were a typical pleasure catch. At the time, many locals just said, by way of “explanation”, the Dee is ****, or the Dee is overfished etc.
The better overall explanation seemed to concern the water management schemes of the early 1960’s which plugged the Dee into Welsh mountain reservoirs, the river becoming a conduit for water supply to the waterworks outside Chester, and onto Wirral and Merseyside. The water in mountain reservoirs is cold, and the average temperature of the river was lowered, suppressing the plant and insect life at the base of the food chain. This was compounded by the way the river rushes quickly and steeply down to the flat, coarse-fishing plains – still cold – and by the tree-lined banks in many areas which shade the margins from sun, further inhibiting plant and insect growth and hence fry survival. There was never any official explanation of why the fishing collapsed for a long time, but that was what I pieced together, rightly or wrongly; I wonder what ideas on the river you have, as I still have a soft spot for it though I no longer live in the area.
During the second spell I lived there, in the 90’s, it was recovering, but slowly. A mate with no car used to cycle, with his tackle, up the meadows from Chester to Eccleston, stopping to fish at intervals, looking for roach. (we didn’t think it helped when the cormorants started doing much the same thing, but not putting them back). Sometimes he’d find a pocket of fish, and catch a few, but you knew if you went back they’d be somewhere else by then. By the time I left, in 2004, the fishing was much improved, some of the enhanced catches down to EA re-stocking after a serious pollution in 2000. (But it was still a risky choice for a day out, and 8 times out of 10 I opted to drive to the Weaver or the Dane rather than risk a poor day on my doorstep.) I remember catching 35 barbel from 1-2lb in a morning on a Warrington Anglers stretch, for example, and they were growing on well, and catches in general were getting more reliable.
I believe the river is fishing very well, now that I’ve left. I’m glad if this is so. I used to wonder how the fish stocks could ever recover, given the main obstacle, the lowered temperature, seemed so fundamental. I’d be interested to hear your take on the Dee, and what has shaped it’s recent history.