HYDROLOGICAL RISK CHARACTERISTICS OF THE OZANA RIVER VALLEY
Journal Title: Present Environment and Sustainable Development - Year 2012, Vol 6, Issue 2
Abstract
The occurrence of hydrological risk phenomena is conditioned by a series of factors, related to climatic, geologic, geomorphologic, pedologic, vegetal aspects etc., which are specific to the drainage basin of the Ozana river. The hydrological risk that has a major impact upon the human settlements in the area, is conditioned by the presence of floods which frequently occur in the rivers flood plain. In this present study, we have emphasised the floods that took place between 2005 and 2008, including the maximum maximorum run-off rate of 456 m³/s, recorded at the Dumbrava hydrometric station, in 2005. By utilising the data gathered from the hydrometric stations, located on the Ozana river valley, we have analysed the propagation of the flood waves generated in the three sectors of the drainage basin: the upper, middle and lower sector. After the analysis, we have observed the fact that the area that was most affected by the floods is the upstream river sector, where numerous households and roads have been flooded. Another aspect of the hydrological risk is related to the minimum run-off of the Ozana river, which is influenced by climatic conditions and alluvial deposits from the riverbed. Therefore, during draughts, taking into consideration the presence of very thick Quaternary deposits, the river runs dry on its lower course, for a variable period of time, which can be from a few days, to six months, every year. This phenomenon directly affects the local population, especially through the diminished water reserve in the area.
Authors and Affiliations
Marina Iosub, Dan Lesenciuc
Keywords
Related Articles
- EP ID EP99906
- DOI -
- Views 111
- Downloads 0
RURAL WASTE MANAGEMENT: CHALLENGES AND ISSUES IN ROMANIA
Rural areas of the new EU Member States face serious problems in compliance of EU regulation on waste management. Firstly, the share of rural population is higher and it has lower living standards and secondly, the...
THE ROLE OF NGOs IN THE SUSTAINABLE DEVELOPMENT IN BANGLADESH
Non-governmental organizations are claimed to have impacts on the sustainable development in rural areas of the developing countries and the Bangladesh Rural Advancement Committee (BRAC) is identified as an example...
GEOGRAPHICAL DESCRIPTION OF THE 2ND DISTRICT OF BUCHAREST
Located in the north-east of Bucharest, with a population of approx. 400,000 inhabitants, the current territory of the 2nd district was once part of Vlăsiei forests, crossed by the river Colentina. It is a tabular plain,...
CONSIDERATIONS REGARDING THE CLIMATIC POTENTIAL FOR TOURISIC ACTIVITY IN DOBRUJA
The purpose of this paper was to evaluate the climatic potential for touristic activities in Dobruja so that the valorization of the services in this domain should be as lucrative as possible. It was thus observed...
IDENTIFYING AND HIERARCHISING AREAS WITH ENVIRONMENTAL DYSFUNCTIONS DETERMINED BY DEFICIENT WASTE MANAGEMENT IN THE BUCHAREST METROPOLITAN ZONE
The paper approaches an actual theme of current society, with profound ecological, social and economical inferences, respectively waste management. Following observations made in the 2004 – 2008 period by the Centre for...