Tokat province was established hundreds years ago and has rapidly grown since 1960’s. In spite of being on the first degree of earthquake zone, the planning and application facilities have not been maintained parallel to the growing and the lands, which is not suitable for settlements, have been used to consruct public or commercial buildings. One of the misused lands is the riverbed of Yeşilırmak in Tokat province city centre. In this study, land use changes in this area have been determined and interpretated in terms of earthquake by using GIS and RS. For this purpose, firstly, the areal photograph taken in 1963 and one meter high resolution satellite image sensed in 2001 by IKONOS of study area were obtained. Secondly, areal photograph of study area has been scanned and coordinated by using georeferencing process in ArcMap software according to the coordinates of satellite image which has been geometricly corrected in the previous studies. After geometric correction of aerial photograph of study area, the shore line of riverbed has been vectorized as a line object by hand digitizing method. And then shore line data, counterlines (in 20 m), geological map, digital elevation model derived from counterlines and satellite image have been overlayed. As a result, it has been concluded that, the shore line’s positions of old riverbed is different than the former. Nowadays, there are more public, commercial and official buildings in this area. For this reason, some measures should be taken, before earthquake comes.Keywords: GIS, RS, riverbed, earthquake, Tokat Province.Bu çalışmada Tokat ilinin bir kısmının üzerinde kurulu olduğu Yeşilırmak Nehir Yatağı’nın eski ve yeni kullanım durumu CBS ve UA olanakları kullanılarak karşılaştırılmış ve deprem açısından değerlendirilmiştir. Bu amaçla Yeşilırmak Nehri’nin ulaşılabilen en eski hava fotoğrafı (1963) ve Tokat İl merkezine ait 2000 ocak ayı IKONOS uydu görüntüsü ile çakıştırılarak karşılaştırma ve yorumlama yoluna gidilmiştir. Sonuç olarak 1963 yılında kesinlikle ırmak yatağı olduğu görülen yerlerde yoğun bir şekilde yapılaşmanın oluştuğu ve deprem açısından sakıncalı olduğu ve dolayısıyla gerekli tedbirlerin alınması önerilmiştir. Anahtar Kelimeler: CBS, uzaktan algılama, nehir yatağı, deprem,Tokat
