Homepage of "crisis management type hydrograph operation meeting" to be comprised in the Ministry of Land, Infrastructure, Transport and Tourism and local public entities of the whole country can confirm water level data in "water level information of river" about operational starting "crisis management type hydrograph" from March 18, 2019.
We set the flooding start water level and observation start water level in crisis management hydrograph and are displayed on HP screen.
○The flooding start water level…Water level that the flooding might produce near hydrograph setting point
○Observation start water level…Water level that hydrograph starts observation
(the system is such that ※ crisis management type hydrograph starts observation when we exceed constant water level)
Please note to plan improvement in precision about setting of the water level mentioned above as you change based on the situation at the time of flood as needed.
History of past setting change is this → Water level change history (the point of 2019.7.23) (PDF: 67.5 kilobytes)
"Water level information of river" homepage is this place → https://k.river.go.jp (external link)