A section of the River Mersey is in the town of Northenden and one of its more popular parts is the weir, which now has a fish ladder enabling migrating salmon and sea trout to get upstream. The weir is flat with tiles and has only a thin sheet of water running down the weir as it is fairly wide. Fishing can be very good here as this stretch contains trout, roach, dace, eels, pike, salmon (mid autumn-mid-spring and this goes for sea trout), chub, barbel, and some grayling have been caught.