The number of scientific studies on geomorphometry, which is a subject between theoretical geomorphology and practical geomorphology, has increased in recent years. Therefore, sounder results can be obtained about the formation and development process of topography. This study aims to explain the geomorphometric features of the Hoşköy River Basin, which extends on the Ganos Fault that is the westernmost branch of NAF (North Anatolian Fault), and the role of the young tectonic unit on the morphological development of the region. To this end, an attempt has been made to reveal the geomorphometric features of the basin area through various geomorphometric indices. The study has intended to answer the following research questions: “What are the geomorphometric features of the Hoşköy River Basin? Is there any relationship between these features and tectonic factors? If any, how has this relationship affected the development of the basin?”. The research hypothesis is as follows: Tectonic factors play an important role in the development of drainage basins and the formation and development of drainage. The study is significant because it shows that tectonic influences can be explained through certain geomorphometric methods via GIS (Geographic Information Systems) techniques. 1:25.000 scale topographic map sheets, DEM (Digital Elevation Model) formed based on these map sheets, and geological maps of various scales have been used as basic materials. The methodology of the present study includes various geomorphic indices. The research data have been analyzed and mapped via ArcInfo/ArcMap 10.2 through GIS techniques. According to the research results, tectonic factors have shaped the basin area and the drainage (its formation and development). The tectonic influence has been more intense in the north of the Ganos Fault in comparison to its south in the basin area. That has caused the topography to warp to the south and rise on the right side of the main tributary and to head northward on the left side of the main tributary, all occurring from downstream to upstream. The present study has indicated that tectonic influences on the topography can be explained through certain geomorphometric methods via GIS techniques. Thanks to this feature, GIS can be used as an auxiliary tool to make effective decisions in topography-based analyzes and planning.
Geomorphometry, Ganos Fault, GIS (Geographic Information Systems), Hoşköy River Basin, Tekirdag