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Volume XVII |

Lateral migration of the Jiu river course between 1864 and 2018. Case study: Craiova – Zăval sector

Abstract: During the last 154 years, the Jiu river course that stretches from its confluence with the Amaradia down to the outlet has undergone serious lateral and length changes. The main purpose of this article is to highlight these changes, to determine their magnitude, and to understand the future evolution of the Jiu course.
The results of our analysis showed that from 1864 until 2018, the Jiu river became shorter in the lower section, decreasing with 38.1 km, from 134 km to 95.9 km. The shorten-ing of the course happened gradually. Thus, between 1864 and 1910, the length of the course decreased by 25.6 km, from 134 km to 108.4 km. From 1910 until 1970 there was a shortening of 11.9 km and between 1970 and 2018, the river shortened its course by about 0.6 km. The greatest lateral distance between its historical and present channels showed a maximum of 11.22 km on the outlet.

Volume XVI |

The impact of the urban expansion on the Jiu floodplain. Case study –Craiova, Romania

Abstract: The urban expansion of any settlement implies changing natural environment and gradually transforming it into an anthropogenic one to assure the needs of the community. A first step in urban planning is to identify the changes that have been made, and this study reconstructs the anthropogenic changes induced to the Jiu floodplain in the last 150 years, through multi-temporal spatial comparisons, geomorphological characteristics and anthropological and environmental transformation indicators. The processing of historical cartographic materials and current satellite imagery highlights the dynamics of the wetlands and the built-up area in the Jiu floodplain between 1864 and 2017. The urban expansion required flood protection works that were carried out along the canals and lakes resulting from the drainage of the ponds and marshlands. On the course of the Jiu hydro-technical works of straightening, embankment and regularization were achieved, which led to the transformation of the course from a highly meandered one as it was in the second half of the 19th century into a sinuous one in 2017. The study is a useful tool in urban planning, by centralizing the changes in the floodplain, the anthropogenic works carried out and the changes of the Jiu course within the analyzed sector.