Definitions for "Disappearing stream"
in a karst region, a river or stream that flows into a sinkhole or crack and from there into an underground or cave river system.
A surface stream that drains rapidly and completely into a sinkhole.
A stream that disappears into an underground channel and does not reappear in the same, or even in an adjacent, drainage basin. In karst regions, streams commonly disappear into sinkholes and follow channels through caves.