International Conference on Environmental Resource Management in Global Region (ICERM) 2017 Flood Susceptibility Based Geomorphological Approach in Sitiarjo Village, Sumbermanjing Wetan, Malang Regency Maulana Yudinugroho 1 , Krishna Aji Wijaya 1 , Isna Pujiastuti 1 , Ratih Winastuti 1 ,Muhammad Thariq 1 , Muhammad Fariq 1 , Djati Mardiatno 1 1 Department of Environmental Geography, Faculty of Geography, Universitas Gadjah Mada, Indonesia Correspondence: maulana.yudinugroho@gmail.com Abstract. Sitiarjo is an agriculture area located at a downstream part of Penguluran Watershed System. Due to geometric factor of the watershed system and heavy rainfall on wet season, this village has been flooded annually in the last 10 years. There were no casulaties reported but the impact caused the economic losses. The aim of this research was to identify the geomorphological characteristics related to spatial distribution of flood susceptibility in Sitiarjo Village, Sumbermanjing Wetan, Malang Regency. The data were collected from secondary data e.g. maps, report from agency and other source and primary data from observation and investigation in the field. The geomorphological map was resulted from secondary data from DEM and geological map. Distance to river, river flow density, and slope parameters were used to compose the flood susceptibility map. Each parameter validated through fieldwork. Geomorphological map was used to analyze the flood susceptibility distribution in Sitiarjo. Results showed geomorphological characteristics are well correlated with the flood susceptibility distribution. 1. Introduction The consequences of Indonesia’s geographic feature as the region located in monsoonal zone is that there are only two seasons occurred, wet and dry season. Several places in Indonesia are vulnerable to flood event in wet season due to high rainfall. Flood occurred in many places of Indonesia. Sitiarjo Village is one of many areas that are often flooded. The most memorable flood for Sitiarjo’s community has occurred in 1993, 2003, 2007, 2010, and 2013. Flood events in 2013 was the most severe flood that caused 2.787 people affected by flood. Moreover, 166 hectares rice fields are severely damaged and threatened by crop failures and 45 hectares of banana plantations were damaged [1]. Though, most of the Sitiarjo’s vilagers livelihood as a farmer. Flood is serious interference for them. Flood is strongly related to watershed system feature and its management. Sitiarjo is located in the downstream zone of Penguluran Watershed. Its system shape was classified as rounded waterhed. This watershed has unique hydrologic pattern due to its morphometry