洛
ラク

Kyoto, the capital

JLPT0 G13 S0 F2302

水 water + 各# (come to a stop) → tributary that connects with a river and comes to a stop. 洛水 is the name of a *tributary of the Yellow River* → *Kyoto/the capital* (← association with the onetime Chinese capital of 洛陽).

[Full Kanji Etymology List]