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1966 Flood of the River Arno in Florence : ウィキペディア英語版 | 1966 flood of the Arno River
The 1966 flood of the Arno River in Florence killed 101 people and damaged or destroyed millions of masterpieces of art and rare books. It is considered the worst flood in the city's history since 1557. With the combined effort of Italian citizens and foreign donors and committees, or ''angeli del fango'' ("Mud Angels"), many of these fine works have been restored. New methods in conservation were devised and restoration laboratories established. However, even decades later, much work remains to be done. == Overview == Located in the Tuscany region of Central Italy, the Arno river is approximately long. It flows from the Mount Falterona hills of the Apennine Mountains to the Ligurian Sea, just west of Pisa. Lush vineyards and olive groves line the river's scenic course to the west, out to sea. Principally utilized for irrigation purposes, only of the river is used for navigation. The highest flows of the river generally occur in spring and autumn of every year, when rainfall in the Apennines is at its greatest. The intensity of the 1966 flood was further intensified by both the orography of the Apennines, which contributed to the high run-off rates and river discharges, and urban development. Roads, such as the Via de Calzaiuoli, served as narrow channels for floodwaters, allowing for their greater speed and destruction within the city; bridges, on the other hand, hindered river flow where it was needed, allowing water to pour over the floodplain with great force.
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