Sandomierz Basin is a lowland, located in southeastern
Poland, between the
Lesser Poland Upland,
Lublin Upland and the Western
Carpathians. Its name comes from the historical city of
Sandomierz, and the basin has a triangular shape with the size of around . It is drained by the
Vistula River, as well as its eastern tributary, the
San (both rivers make its northern border). Among major cities located in the Sandomierz Basin are
Debica,
Jaroslaw,
Mielec,
Przemysl,
Przeworsk,
Rzeszów,
Stalowa Wola,
Sandomierz,
Tarnobrzeg, and
Tarnów.