upstream/downstream effect

[varia_maria]

need your help!!!

what they are, these upstream/downstream effects?

what Polish term could match it?

Thanks for info.

[Gość: skanska]

upstream-along a river, in the opposite direction from the way the water is
flowing
ￚopposite downstream
e.g.Fish instinctively fight their way upstream against the current.

[Gość: skanska]

upsrteam
1 powyżej
2 rzeka
3 w górę rzeki
4 prąd
5 pod prąd1 rzeka
downstream
1 rzeka
2 w dół rzeki

[varia_maria]

Thanks but those I know. I have meant upstream/downstream effects mentioned
together with climet changes, noise, urban effects and so on.