• 艹(grass; plant)
• 洛(Luo River (sound and meaning of falling into water))

Leaves falling from a tree like water flowing in a river expresses the meaning of the character for falling.

• 水(water (pictographic))

Water mimics the flow of running water with ripples on both sides.

• ⺮(bamboo)
• 官(official; manage)

A bamboo tube is managed by officials, so 管 means both tube and to manage.

• 艹(grass; plant)
• 洛(Luo River (sound and meaning of falling into water))

Leaves falling from a tree like water flowing in a river expresses the meaning of the character for falling.

• 水(water (pictographic))

Water mimics the flow of running water with ripples on both sides.

• ⺮(bamboo)
• 官(official; manage)

A bamboo tube is managed by officials, so 管 means both tube and to manage.