It sat in the middle of a green river delta.

The Catskills began existence as a river delta 350 million years ago.

Turning east, the Colonel could just make out the ocean coast beyond the river delta.

The river delta is filled with hundreds of small islands.

Clouds had moved in over the river delta and not even the starlight helped.

But at the the time was a massive river delta broke through creating what is now the channel.

She looked around the silent mountains, the valley, and the river delta.

The tiny river delta gave it away, especially if you live along the Mediterranean.

They passed another sea, and a great triangular river delta.

Every one of those ships is named after a town along the river delta.