下流かりゅう
karyū

Noun

1. downstream; lower reaches of a river

まず、私わたくし活動かつどう範囲はんいは、おもに養老ようろうがわ下流かりゅういきです。
mazu watashino katsudōhan'iwao moni yōrō kawashimoryūikidesu.
First off, my area of work is mainly in the lower reaches of the Yourou River.
Noun

2. lower classes

Antonym of 上流