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.