ANALYSIS OF THE FLOOD RISK IN THE PATLAGEANCA AREA NEAR CEATAL ISMAIL FROM THE DANUBE DELTA.

Since ancient times, mankind has tried to establish a causality of the phenomena that occur in the surrounding world, to find solutions and answers. Floods are widespread in the Danube Delta they cause great material damage and loss of human life and important consequences. The production of floods in the Danube Delta is due to the entry into the Danube of large amounts of water from rains, from the sudden melting of snow and mountain glaciers, as well as from underground water sheets. Deforestation favors the rapid runoff of water on the slopes and the production of heavy floods. Risks can be classified either according to the mode of manifestation (slow or fast) or according to the cause (naturales au anthropique). They produce smaller or larger damages depending on their amplitude and the favorable factors in the place or region where they manifest. In order to identify the risk, the emerging risks must first be identified, there are a number of risk identification and evaluation methodologies. In the present work, several flood scenarios will be analyzed for the Patlageanca locality in the Danube Delta using two flood risk analysis methods. Flood risk analysis methods will be applied using two specialized programs that perform flood scenarios at different water levels. The main database is represented by the digital land model for the town of Patlageanca. The digital model together with the data collected in the field such as bathymetric information, flows and water levels are the starting source for the flood risk analysis of the target locality. The results provide information on the depth of water on flooded portions and the extent of flooded areas. The results presented in this paper can provide concrete support to the authorities who have decision-making power to establish action measures to intervene in the reduction of flood risk. Therefore, the present work represents a sum of several engineering methods that, applied, can contribute to the creation of flood maps for a locality located in an area at risk of flooding. Flooding can cause particularly significant damage in the Danube Delta, especially on the main arms where there are human settlements. For this reason, multiple points of view, methods, hypotheses and future possibilities adapted to new trends (social, economic, natural) and determined by different factors, play an important role in flood risk management and in establishing flood vulnerable areas. [ABSTRACT FROM AUTHOR]