This water follows a course approaching to that of the Aqua Marcia and Aqua Claudia, but is on a lower level than either, as its sources are not so high up as the Anio. All the waters of which the Aqua Felice is composed, were united by Urban VII. in one immense reservoir, and several smaller ones, whence they were conducted into the conduit by an aperture named fistola urbana, formed in a block of marble. According to Fontana, this stream is equal to a hundred superficial pouces d'eau." The quantity of water has been estimated at 20,537 cubic metres in twenty-four hours, distributed in sixteen public, and eleven common fountains. The fountain from which its water is distributed to the city, is adorned by a statue of Moses striking the rock, and two other figures, with four Ionic columns of granite, and two Egyptian lions of basalt, which formed part of the ancient decoration of the Pantheon. Its name, Felice, is derived from Felice Peretti, which was that of the family of Sextus V. The Aqua Paola. In 1694, the Cardinal Orsini, having proposed to the Papal government to bring water from the Lake Bracciano (anciently Alsietinus) to Rome, in the ancient channel of the Aqua Alsietina, the architect, Paglia, examined the levels, and stated that a sufficient quantity of water could be obtained and directed into the channel as projected by the Cardinal.Permission was accordingly given to the Orsini family to commence operations, on condition of furnishing about a third part of the water for the supply of one of the new public fountains, and dividing with the apostolic chamber, th revenue which would arise from the disposal of the remainder.