"We're going upstream, so that side is the left bank."

Do we go upstream or down to try and find it?

We'll have to go upstream to look for an easier place to attempt it.

Let's go upstream and see what we can find for a starting point.

"We'll go upstream and find a safe place to get us across."

Earlier boats did not have enough power to go upstream against the river's current.

We have to go upstream and cross above where the reservoir was.

"We've been going upstream all day, now you say we go down."

There was always a chance she'd turn and go upstream.

However, with no practical way to go upstream, trade was limited.