The top part of the pool is merely a continuation of the slack water at the lower end of Bridge Pool. The water here is quite deep.
Fish might dally here after coming up through the fast stream from the main river, especially in low water. The pool then shallows into a glide before splitting into fast and shallow streams on either side of a shingle bank. Most of the water goes down the long stream by the right bank on the far side - it might just be a good place to hook a sea trout !