Where does “Yläjoki” come from?

Yläjoki (Finnish) comes from Finnish ylä-, from Finnish alhaalla, from Finnish ala-, from Proto-Finnic ala, from Proto-Uralic ëla — below.

Ancestry of “Yläjoki”, step by step

StepLanguageWordMeaning
1Finnishylä-upper; superior, high, higher
2Finnishalhaalladown below, below; down (here/there)
3Finnishala-under-, sub-, lower, nether; inferior
4Proto-Finnicalalower; under
5Proto-Uralicëlabelow
Every word from Proto-Uralic ëla →Every word from Finnish ala- →Every word from Proto-Finnic ala →