Search and rescue efforts are underway in wide areas of western Japan following record rainfalls.
Chief Cabinet Secretary Yoshihide Suga told reporters on Monday that about 73,000 personnel and 70 helicopters are engaged in the operations.
Self-Defense Force and Coast Guard officers are involved, as are personnel from police and fire departments nationwide.
Suga said work to supply food began on Monday at evacuation centers in heavily affected areas. He added that Self-Defense Force members are delivering water in wider areas.
Suga said a government survey group will determine what is needed in the affected areas of Okayama and Hiroshima prefectures.
He also said the government has set up a team to support the lives of local residents. He said the government will actively provide support by sending officials to affected areas and improving living conditions at facilities where evacuees are staying.