I seem to be hearing the same from places all round the country Ian. Barbel seem scarcer this year, even on the usual 'hot spots' like the Trent, Severn, and Avon. Like you, I think that the heavy flooding over the winter has played a part, not the otters as a guy I met on the bank the other week kept insisting, we had a slightly heated, (more like luke warm), debate on the subject. I've not tried for them yet this year, I've reached the time of life when my approach is more sedate than it used to be. Walking a few miles of bank, to locate them is out now. I don't mind a longish walk to a spot, but then settle down and fish. I thought I'd hooked a barbel last week when I put out a couple of dedras on the leger, after the float line died on me. I was hoping for a perch, and was getting a few knocks from smaller fish, when the tip swung round a few inches. I thought I'd missed the bite and started to reel in, only for the rod to bend over as something powerful took off across the river. After about 5mins, and several runs under a willow, it suddenly turned and dived under the willow above me, and the line went solid. I tried pulling, then leaving slack for a while, but nothing. I decided to pull for a break, and tested the 5lb sensas hook length to it's limit. The 'thing' then started to move, and a decent pike surfaced under my rod tip. I was worried that it wouldn't fit into my 22ins pan net, but at the third attempt it just made it. The hook was set on the outside of the scissors, so easy to unhook. I tried to weight it in the net, but my scales batteries were dead, but at a little over 36 ins, I guessed 12lb +. It rested at my feet for more than 5 minutes before it took off it was so knackerd. I went back to catching roach, gudgeon, perch, chublets, and of course 'dice'. An hour or so later my keepnet tried to take off, and and I'm sure it was the same bloody pike that had come back for another go!
It's getting to the time of year I always thought of as prime barbel time, so if the weather, and new threatened lock down permit, I might get a session or two after them.
I really must try to sort out posting pictures on here, when I get the time.
John.