Dora Riparia is an Italian river, a left-hand tributary of the Po. It is 125 km (78 mi) long, with a 1,231 km² catchment basin.It originates in the French Alps, close to Montgenèvre in France where it carries the name of Piccola Dora. It then changes name to Dora Riparia after the confluence with the stream Ripa in the Argentera valley and the Thuras de Bousson close to Cesana. Po redirects here, for alternate uses see Po (disambiguation). ... For the term related to television programmes, see watershed (television). ... The French Alps are simply those parts of the Alps which lie in France. ...

Further down the valley, in Oulx, the river grows thanks to its main tributary in the higher ranges Dora di Bardonecchia, and before Susa is augmented by Galambra and Cenischia. After Susa, it only receives minor tributaries: from the left Gravio by Condove, Sessi by Caprie, and Messa by Almese, from the right Scaglione by Meana and Gravio by Villarfocchiardo. It runs through the valley of Susa, and after having crossed part of the Padavian plane and the territories of the comunes of Avigliana, Alpignano, Pianezza and Collegno, joins the Po at Turin. It runs as a stream until Susa, then as a river to Turin. See Susa, Italy for the city in Piemont. ... Avigliana is a town of approximately 10,000 inhabitants located about 25 km from Turin in the Susa valley in Piedmont in northern Italy. ... Location Region Piedmont Province Turin Area   – Total   – Water 130 km&sup2 (50 mi²) ##.# km² (#.# mi²) #.##% Population   – Total (2002)   – Density 857,433 6,596/km² Time zone CET: UTC+1 Latitude Longitude   45°04′ N 7°40′ E1. ...

It was at the confluence of Dora Riparia and Po that present-day Turin was founded in Roman times. Dora Riparia was there for a long time the main source of energy: already in medieval times its water was collected in canals (duriae) that drove mills, water wheels and other contraptions. In the area between the confluence of Dora Riparia and Stura in the Po, where before the destruction caused by the 1706 Siege of Turin one could find the Regio park, lies today the Parco della Colletta. Roman or Romans has several meanings, primarily related to the Roman citizens, but also applicable to typography, math, and a commune. ... Categories: Water-transport stubs | Canals | Water transport ... A watermill is a machine constructed by connecting a water wheel to a pair of millstones. ... An overshot water wheel standing 42 feet high powers the Old Mill at Berry College in Rome, Georgia A water wheel (also waterwheel, Norse mill, Persian wheel or noria) is a hydropower system; a system for extracting power from a flow of water. ... Events May 23 - Battle of Ramillies November 5 - The Dublin Gazette publishes its first edition. ...

In the 20th century, industrial and urban development significantly degenerated environmental conditions in the river; renovation work did not start until the 1990s. In 1999, the ARPA (the Regional Agency for Environmental Protection) of Grugliasco conducted a study of the entire Dora Riparia and the river Sangone, revealing a condition of serious pollution. Then, in 2002, the agro-natural park of Dora Riparia was born, financed by the comune of Collegno and the region of Po, to preserve the natural habitat, but also to integrate agricultural and river area. (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901–2000 in the sense of the Gregorian calendar (1900–1999 in the... Urban is in or having to do with cities, as distinct from rural areas. ... Events and trends Technology The World Wide Web was born at CERN Explosive growth of the Internet; decrease in the cost of computers and other technology Reduction in size and cost of mobile phones leads to a massive surge in their popularity Year 2000 problem (commonly known as Y2K) Microsoft... 1999 is a common year starting on Friday of the Common Era, and was designated the International Year of Older Persons by the United Nations. ... The acronym ARPA has several meanings: It is the former abbreviation of a U.S. military organization now known as the Defense Advanced Research Projects Agency (DARPA). ... 2002 is a common year starting on Tuesday of the Gregorian calendar. ...