Torella has always enjoyed the presence of many water sources , more important is that of the river Ofanto , which with its 170 km long , is the most important of the entire South.
Since ancient times , the inhabitants exploit its water to operate the mills and irrigate the fields . The best preserved mill that has withstood the various earthquakes and weathering is called ” King Salierno them ” , located in the district S.Antuono .