Aguas Dulces is a resort in the Rocha Department of southeastern Uruguay. The resort is located at the east end of Route 10 and the south end of Route 16, on the coast of the Atlantic Ocean, about 11 kilometres southeast of Castillos and between the lagoons Laguna de Castillos and Laguna Negra. Its nominal distance from Montevideo is 288 km, usin…Aguas Dulces is a resort in the Rocha Department of southeastern Uruguay. The resort is located at the east end of Route 10 and the south end of Route 16, on the coast of the Atlantic Ocean, about 11 kilometres southeast of Castillos and between the lagoons Laguna de Castillos and Laguna Negra. Its nominal distance from Montevideo is 288 km, using Ruta Interbalnearia, Route 9 and Route 16.