Environmental documents are the main requirement in development. The environmental document is prepared as a study in monitoring the quality of the environment both at the activity location and in the area around the development. The development of tourist areas certainly requires a study of the identification of environmental impacts. This research is an initial effort to identify environmental impacts on the coastal tourism area of Lake Tondano as the basis for the preparation of environmental documents, including AMDAL, UPL-UKL and SPPL. Identification is carried out starting from the pre-construction stage, construction stage, and operational stage, so that by identifying all impacts, management efforts can immediately be carried out to reduce the impact of damage that will occur.The focus of the research is on the tourist area on the coast of Lake Tondano. The research method is descriptive qualitative, preceded by field observations of the types of tourism that exist and then described according to the stage of the identification of environmental impacts. The results of the research around Tondano are lake nature tourism, culinary tourism, historical tourism and trade.