ISWSGS2018 (the 2nd International Symposium on Watershed Geographic Sciences) will be held from October 11 to 15, 2018 in Nanjing, China. This symposium is co-organized by Nanjing Institute of Geography and Limnology, and Key Laboratory of Watershed Geographic Sciences, Chinese Academy of Sciences. The theme of the symposium is “Comprehensive observation and modeling”. The Symposium aims to provide a forum for the exchange of the latest research achievements on watershed geographic sciences. World leading scientists are invited to present keynotes covering the latest advances in soil and water processes, human geography, remote sensing and watershed management. Both oral presentations and posters are acceptable at the symposium. The official language is English.