Then I moved him back inside and filled up his water barrel.

The air stayed calm, the water barrels were almost dry.

I saw something move in the shadows near the water barrel.

The figure beside the water barrel did not move as I approached.

Buy a water barrel and we'll fill it in the river.

What he had taken for a figure in black was a water barrel.

We took care of the horses but left the water barrels on the wagon.

For example, in summer the house portal would be filled with water barrels.

I noted that the water barrel was nearly empty already.

However, thanks to the narrator, "we happen to know he's in the water barrel."