In the 14th century, during the reign of king Milutin, a canal connecting the Sazlija and the river Nerodimka was dug, creating an artificial bifurcation, since the Nerodimka flows to the south into the Lepenac river and thus belongs to the Aegean Sea drainage basin, while the Sitnica flows to the north, into the Ibar river and belongs to the Black Sea drainage basin.
In the 14th century, during the reign of King Milutin, a canal linking Sazlija to Nerodimka was excavated, forming an artificial division. The Nerodimka flows south into the Lepenac river and thus belongs to the Aegean Sea drainage system, whereas Sitnica flows north into the Ibar river and is part of the Black Sea drainage system.