The amount of matter carried by a large river is enormous.
They crossed a large river, then a couple of small ones.
By the time they reached a large river, only about thirty were still on their feet.
The woman and man had been traveling along the right bank of a large river, but some distance from it.
We could have gotten the same results in a lake or a large river.
There are some small rivers in the town, and no large river.
She stopped where a small creek joined the large river.
To get back to the lodge we must cross a large river.
Finally it led to a river, large enough to have a smooth surface.
There's another, larger river further east that goes the opposite way.