Title: Identification of Urban Heat Island in Yogyakarta's Selokan Mataram Riverbank Area
 This research aims to identify the Urban Heat Island (UHI) phenomenon in the Selokan Mataram riverbank area, which manifests traces of human life in the Anthropocene era. Selokan Mataram is ten kilometers long and has various regional characteristics formed spontaneously from several functions and typologies of areas that continue to develop. An area with low population and low-density built-up land, or rural, has a low surface temperature compared to an area with high population and high-density built-up land, or urban. This difference in air temperature is theoretically supposed to occur. Even research in several similar articles in other countries has been proven and has been a concern. In the context of the study object in Mataram Sewer, some results follow the theory and similarities to similar studies. Specifically, the difference in air temperature recorded in the early morning reached 2,35°C in the early morning and 4,55°C in the afternoon.