Abstract
Along the Ootani Dam reservoir, there are 11 places to be suspected or to be landslide. These places are classified according to the landslide level against filling water level and activation of landslide. From the result of classification 7 places ware taken measures to be safe, 8 places were arranged monitoring equipment for measuring landslide behavior and the safety of landslide during filling were confirmed through the test filling. Nunokura landslide is most large in these places and again moved landslide from the previous year of filling, which slided two years ago.
In this reports, behaviors of landslide Nunokura Landslide from the begining to the test filling through the construction of measure of landslide and the measures of landslide are described.
