The springs themselves are made up of several rock pools with gravel bottoms.

She felt her control solid beneath her, like a good gravel bottom in a fast current.

The river has a gravel bottom throughout its length.

The fish are most common in slow to moderate water currents, over fine gravel bottoms.

It lives on the bottom, often in areas with swift current and sand or gravel bottom.

Unlike many Illinois lakes, this body of water has a gravel bottom, not mud.

The lake was very shallow and it had a white gravel bottom.

At that place there was a gravel bottom.

They prefer to live over sand, mud, or gravel bottoms.

The ship slowed, and her keel ground gently on the gravel bottom.