At the invitation of the American Academy in Rome, and with the kind permission of the Soprintendenza Archeologica di Roma, a 5-week excavation season was undertaken in June and July 1998 to investigate the Aqua Traiana and a large Roman water-mill complex in the Academy's parking lot, on the Janiculum Hill in Rome. The 1998 season was funded by the American Academy, the Packard Foundation and the Craven Committee of Oxford University. The mills were already known from observations by R. Lanciani in the 1880s, and from small-scale rescue excavations by Prof. Malcolm Bell during the laying of electricity and gas lines in the Via Medici in 1990 and 1991.
The project continued with an excavation season from 27th June to 30th July, 1999, funded by the American Academy, the Packard Foundation, the Oppenheim Foundation, and the Craven Committee of Oxford University. Excavations have now ceased and the project is being written up; a preliminary report (in Italian) appeared in the magazine Forma Urbis in February 2000, and an interim report (in English) will appear in Memoirs of the American Academy 45 (2001).