Arroyo Saladillo Dulce flows through the southern reaches of Santa Fe province in Argentina, draining a basin of approximately 3,205 square kilometers before emptying into the Paraná River between the cities of Rosario and Villa Gobernador Gálvez. Despite being called an arroyo in Spanish, this is a sizable, perennial stream — not an intermittent watercourse — with consistent flow year-round. It serves as the political boundary between Rosario and Villa Gobernador Gálvez in the Greater Rosario area, and its lower kilometers wind through one of Argentina's most densely populated regions. The stream is an important waterway both agriculturally and demographically, and its confluence with the Paraná near the port of Villa Gobernador Gálvez makes it a notable fishing destination for anglers targeting warm-water species typical of the greater Paraná river system.