DBPapers

THE USE OF GIS IN THE DELIMITATION OF THE SURFACE WATER BODIES (HOMOGENEOUS HYDROGRAPHIC BASINS)

G. BIALI, P. SCHNEIDER
Thursday 11 October 2018 by Libadmin2018

ABSTRACT

This paper studies a hydrographical space with an area of approx. 20,000 km2, located in the NE of Romania. The main objective of the study is to identify and delimit the water bodies (hydrographic microbazins) within the Prut hydrographic basin. This aspect is very important, in order to determine their status, establish future objectives regarding water management and improve or maintain a certain existing status. The methodologies developed by A.N. Apele Române Bucharest were used for the classification and delimitation of surface water bodies in types. In the study, the use of the GIS technique was very useful, considering the variety and spatialisation of the factors underlying the classification and delimitation of water bodies. This was done in the study, by using the ArcGIS 9.2 platform. The basic data used in this study came from the cadastral plans and the hydrographical maps of the studied area, as well as from ortho-photo-plans for the correction and updating of the graphic information. The attribute database was created and updated from the archive of D.A. Prut and field investigations. There have been used situation plans from the analogical archive, as well as Ortho-photo-plans for the period 2012-2017 and data retrieved by means of drones for setting (checking) the delimitation of borders. By applying this methodology, we found out informational layers with delimitation of water bodies, based on a classification according to the criteria to be presented in this paper. Approaching and solving this issue through GIS techniques is required and justified primarily because of the multitude of geographic spatial factors. The GIS approach to this type of analysis is extremely useful, because it allows tracking rapidly the evolution of the watercourse situation, making it easy to modify the intervening parameters and with immediate implications for the ensemble, in an incomparably shorter time than required by traditional methods

Keywords: Microbazine River (bodies of water), spatial criteria analysis, GIS, graphic database


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