Suddenly the channel was narrowing and disappearing as sand heaped into it.
As a result, the channel narrowed to 48 m from it original width of 54m.
They reached a point where the channel narrowed to less than twenty meters in width.
The river was split by three islands, and the channel narrowed.
Now the Platte has slowed, and its channels have narrowed, in many places to less than 300 feet.
The channel of open water between the top of the Pogodin's sail and the bottom of the iceberg narrowed steadily, rapidly.
It is 185 feet long, and adds to congestion in the river when the channel narrows at low tide.
So he stripped off his boots, tucked them under one arm with the raft, then waded upstream several hundred yards to where the channel narrowed.
At a point where the channel narrowed between two blaeberry-thatched rocks it was possible to make an inclined bridge from one bank to the other.
Where the channel narrowed a little, he crossed a small wooden bridge and continued on down the bank.