The source of the water for the fountain of Piazza Colonna was only 67 feet above sea level; like the Trevi Fountain, the Fontana della Barcaccia, and the fountains of Piazza Navona, all connected to the Acqua Vergine, the fountain of Piazza Colonna was unable to jet water high into the air.
Sumber air untuk air mancur dari Piazza Colonna hanya 67 meter di atas permukaan laut; seperti air Mancur Trevi, Fontana della Barcaccia, dan air mancur dari Piazza Navona, semua terhubung ke Acqua Vergine, air mancur dari Piazza Colonna tidak mampu untuk mendorong air tinggi ke udara.