Shunsuke Mutai, parliamentary vice minister for reconstruction, was visiting the hard-hit northern town of Iwaizumi where 19 people died in devastating Typhoon Lionrock.
Mutai, 60, was shown riding on the back of a younger man over a large puddle of streaming water on September 1 while leading a central government damage assessment team.
Clad in a blue work uniform and black shoes, he was apparently trying to avoid getting his feet wet. Most other accompanying officials wore long rubber boots for protection.
Yoshihide Suga, Japan's top government spokesman, on Monday called Mutai's conduct "inappropriate" and said he should have brought along a pair of boots given his role as head of the government investigation team.
Also Read
Iwaizumi, in Iwate prefecture, was the hardest hit area. Among the dead there were nine people buried inside a residence home for the elderly that was overwhelmed by mud and debris that flowed inside from a surging river.
Overall, 22 people died as a result of the typhoon, one of a series that recently struck northern Japan.
Mutai, a member of parliament, himself has said that he "deeply regrets" his behaviour.
Just a little over a week earlier in India, a senior politician was intensely mocked after photos showed policemen carrying him through ankle-deep muddy water while inspecting deadly floods.
Disclaimer: No Business Standard Journalist was involved in creation of this content