Lorien
Trees bordered the Anduin on both sides of the point where the Sliverlode (also known as the Celebrant, literally silver-course) flowed into it. Mallorn trees grew on both sides of the Silverlode but there were none on the east side of the Anduin. (Farewell to Lorien; Bk1).
The old road from Moria ran along the right bank of the Silverlode. Dol Guldur, Sauron’s fortress before he moved to Barad-dur, was just across the Anduin and the old road must have led there. Dol Guldur was visible – or nearly so – from Cerin Amroth, which was on a hill. (Lothlorien; Bk 1).
Right at the tip of the Naith, where the two rivers joined was the green lawn of the Tongue, and a little distance up the Silverlode from there was the hythe where the boats were moored. (Farewell to Lorien; Bk 1).