I didn't fish it much, 1 evening a week from june till early septemeber and i had an 8,9,10,10,13,13,15,22.04,30.13
So guessing around 15 or 16lb. They did put 14 more in around the 8-12lb mark and think i had at least two of these 'mug fish'. One bloke who fishes it a lot has 6 28lbers (5 different fish) There does seem to be quite a few low 20s.
Depends what your after. Its not what id call a runs water but if all you want is the odd 20 with a chance of a 30 then it will probably do. Plus its a lovely looking water.