Amur Bay
The Amba River , Razdolnaya River , Narva River , and Barabashevka River all flow into Amur Bay . 
<triplet> Amba River <subj> Amur Bay <obj> mouth of the watercourse <triplet> Amur Bay <subj> Amba River <obj> tributary <subj> Razdolnaya River <obj> tributary