Identification of elements exposed to flood hazard in a section of Trotus River, Romania

Abstract

The purpose of this study is to achieve flood hazard map in terms of limited data and identify the elements exposed to the hazard of floods produced by Trotus¸River in section belonging to the commune of Ghimes-F aget, Romania. In order to identify the elements exposed to flood hazard, a first step was to determine the potential depth of water in flood conditions, using three bands of flooding for 10, 100 and 1000 years return period and the digital elevation model. In a second step, we elaborated the hazard map and hazard classification according to the Swiss method of hazard assessment, then the thematic layers with buildings and infrastructure were vectorized from orthophotoplan and inventoried in the field, the land use map was extracted from the Corine Land Cover 2012 data set. The maps of the exposed elements have been achieved based on thematic layers and hazard map. The results of this study provide information about the degree of flood hazard and about the elements exposed to hazard, which allows us to identify vulnerability and quantify the risk in a new study and also support the population and authorities to develop prevention and intervention measures in case of flood hazard.

Assessing 40 Years of Flood Risk Evolution at the Micro-Scale Using an Innovative Modeling Approach: The Effects of Urbanization and Land Planning

“…Exposure to flooding is one of the key parameters in flood risk. Among different possible definitions of exposure [73], here, we consider flood exposure as the presence of items potentially subject to flood damage, which can be quantified through the number or the value of assets in the flood-prone area [49,74]. Changes in time of exposed items and, in particular, residential buildings, are then considered as a proxy for flood risk in the study area.…”

Unravelling the Complexity of Flood Hazards: A Comprehensive Review of Characteristics and Risk Assessment

“…The potential impact of a hazard is influenced by the characteristics of that hazard. The level of flood hazard, categorised as a hydrometeorological hazard for instance, is assessed according to its characteristics, such as depth (Tincu et al, 2018), velocity (Schanze, 2006;Priest et al, 2008;Cancado et al, 2008;Russo et al, 2013;Albanoa et al, 2017), duration (Bhuiyan & Baky, 2014;Hammond et al, 2015), amount of discharge (Messner & Meyer, 2005), flood flow force and flood intensity (Kreibich & Thieken, 2009). Apart from specific flood characteristics, indicators that determine the flood hazard level can also be assessed based on the distribution of the amount of rainfall received in an area (Hai et al, 2018).…”

Flood Hazard Evaluation Using a Flood Potential Index

“…All are important because they contribute to the identification of the susceptibility to floods necessary for decisionmakers to take action and reduce the impact of hazards in exposed areas. Smith [25] introduced the flash flood potential index involving only geographical factors (soil type, vegetation, slope, and land use), integrated with GIS, and developed by other authors since then [26][27][28][29].…”