Senbon Matsubara: Kawa to Ikiru Shounen-tachi is an anime film that premiered in summer 1992.

About the production: the story comes from a other, the film runs about 90 minutes and its current status is "finished".

Its main genres are drama.

After suffering severe floods in 1753, the people of Senbon Matsubara in Shizuoka cooperate on flood prevention around the Kiso, Nagara, and Yuhi rivers. The people of Satsuma (Kumamoto Prefecture) endure great hardships after being forced to undertake the work by the central government, a subtle indication of the bad feeling that would foment into open rebellion the following century. (Source: AnimeVice)

Official synopsis from AniList.