Types of Open channel flow

Steady Flow:

For open channel, the flow is steady if the depth of flow does not change with respect to time at a particular location or section.

Uniform flow:

For open channel flow, the flow is uniform if the depth of flow remains constant along a certain length of the channel.

Non Uniform flow:

For open channel flow, the flow is non uniform if the depth of flow does not remains constant along a certain length of the channel.

Gradually Varied flow:

If the depth of flow changes over a relatively long distance along the length of a channel, then the flow is called gradually varied flow.

Rapidly Varied flow:

If the depth of flow changes over a relatively short distance along the length of a channel, then the flow is called rapidly varied flow.