They were on the upstream end, making it impossible for her to see what blocked the outlet.

We had come to the point where the island ended at the upstream end.

The weir is on the other side of the lock island at the upstream end.

It is the second in the cascade series from the upstream end, and the last to be developed.

The upstream end of the passage was sealed with subsequent lava flows.

The core areas of the reserve with no exploitation permitted are at the most upstream end.

The water was too wild at the upstream end.

An opening in the wall near the upstream end carries a small brook into the beck.

Canyon City, at the upstream end of the canyon, was the place where people stopped to plan their next move.

The lock is at the upstream end of the mill bypass channel.