run dry
dry out

Over time, the whole thing would run dry, unless there's water coming in too.

The scene more or less ran dry by the end of 1975.

The country could just run dry if it went on like this.

The theories of the first two had both run dry.

One of them has been run dry, and so we have to switch over to the other.

Despite the stone at the base of the well, it has never run dry.

With her mother's death an important source of income had run dry.

The spring ran dry at the beginning of the 21st century.

Pretty soon we just run dry, and they keep going.

He is coming to the place where the springs run dry.