As water flows from a reservoir into a channel, if flow in the channel is supercritical, water enters the channel at critical depth.

Question

Quizplus · Accepted Answer

When water flows from a reservoir into a channel and the flow in the channel is supercritical, water enters the channel at critical depth. This is because supercritical flow has a lower height and higher velocity than critical flow, so the water must increase in depth to decrease its velocity in order to achieve critical flow.

As Water Flows from a Reservoir into a Channel, If