The field reconnaissance consisted of aerial reconnaissance and limited ground inspections of the embankment crests. No damage was observed during the ground inspections of the crests and the embankments appeared to have generally performed well. There also appeared to be a scarp approximately one meter high associated with this crack. The cracking was indicative of possible upstream slumping of the slope, but no other distress was observed on the slopes above the cracks. It is not known if the apparent cracking is significant or if it involves only surface slope protection materials.
Additional investigation is needed to clarify the performance of the dam.
Aerial photograph of Kitayama Reservoir. Aerial photograph of Kitayama South Dam. Aerial photograph of cracking on upstream slope of Kitayama South Dam. The dam appears to be a cemented masonry gravity dam constructed to have a horizontal curve. A monument on the crest of the dam indicates that the dam was originally completed in 1904 and had a 3-meter raise in 1914.