The river flows south from the eastern foot of Mt.

[2] Every year from late November to early December, the Momiji Festival is held at Tatsuta Park.

[1] Nara Prefecture The river is also known as a famous spot for maple trees since ancient times, which were planted in the Edo period with the advice of Shusei Fujimon, a scholar of Japanese classical literature, and the support of Chūgū-ji Temple.

[2] There is a theory that the name of Tatsuta-age is derived from the fact that it resembles the color of autumn leaves in this river.

[3] On Wednesday, 5 July 2023, the river turned bright lime green due to traces of sodium fluorescein, a component of coloring agents in bath salts.