Aniene Tiber and again in full
On 17 May the rivers Tiber and Aniene have reached the maximum level of full after heavy rain falls during the first half of the month. The Tiber has recorded a height maximum of 8.9 meters all'idrometro Ripetta, while the height of about 4.1 meters Aniene all'idrometro Ponte Mammolo.
It is treated to both rivers, a 'full postal ", as ranked on a scale to see how the next grade" full unique "and finally" full exceptional. " This occurs very rarely, fortunately, during exceptional rains, while the full ordinary may occur several times within a single year. The last full, but also ordinary largest, occurred in January of 2010 and had registered for a maximum of 11.1 Tiber Ripetta meters and 5 meters for almost Aniene Ponte Mammolo. A full most important occurred in December 2008 with the Tiber that was at the threshold of 12.5 meters Ripetta holding their breath while the Aniene half of Rome, exceeding 6 meters in Ponte Mammolo, overflowed into the area causing severe damage Tiburtina . Even Montesacro and Casal de Pazzi Aniene the serious problems created by flooding large areas of nature reserve and damaging the water channels and via the Cecchina Sannazzaro, besides causing drainage problems in the sewer area via Levanna - via Sannazzaro and valleys in the district damage, which required substantial funding and rehabilitation work that, at least those made, they lasted until a few months ago.
The reason for the flood of May 17, 2010 were as intense rainfall since the early days of the month fell in abundance on Italy. May a particularly "wet" this in 2010, one of the wettest in 60 years in Rome, with 140 mm recorded at Montesacro. Consulting to the Annals of the Hydrographic and Hydrologic Mareografico of Lazio, which shows the precipitation data of the last decades, it appears that from 1951 to date there have been only five months in May as rainy: the 1953, 1959, 1980 , 1998 and 2008. This was the wettest May 1980, which registered a record number of almost 150 mm, followed by the May 2008 (140 mm) when There was another flood of important. Apart from these exceptional years, the average for the month of May in Rome is about 40 mm.
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