The Topolnița is a left tributary of the river Danube in Romania. In the central Mehedinți Plateau it descends into Topolnița Cave, eventually emerging at the foot of a hill downstream. It discharges into the Danube in Drobeta-Turnu Severin.Topolnita (jud. Mehedinti), e-calauza.ro Its length is and its basin size is .
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