ups
tream
1
against the current of a river or stream
- They paddled upstream against the strong current to reach their favorite fishing spot.
- The salmon swim upstream to spawn in the freshwater streams where they were born.
- The canoeists struggled as they moved upstream, battling against the swift-flowing river.
- They hiked upstream along the winding creek to explore the secluded waterfall hidden deep in the forest.
- The village was located upstream from the industrial plant, ensuring clean water for its residents.
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