Here's why:
* Divert means to change the course or direction of something, including water or traffic. This can be done naturally or artificially.
* Artificial passage implies a man-made channel or route, so "divert" accurately reflects the act of creating this passage.
Here are some examples of how "divert" is used in this context:
* "The engineers diverted the river to prevent flooding."
* "The city diverted traffic to a new bypass during road construction."
Other terms that might be used in a similar context include:
* Channel - to direct something into a specific path.
* Route - to establish a specific path for something to travel.
* Bypass - to create an alternative path around something.
The best term will depend on the specific context of your situation.