Respuesta :
Imagery is being used. Imagery is a strong use of sensory details to create a vivid image in the reader's mind.
Answer:
The technique being used is Simile.
Explanation:
Simile is a figurative language technique. It is used in literature to generate a more vivid and powerful image in the reader.
It is used to compare two different things in a more vivid way than normal.
In this case, it is used in the phrase "they have water the street ... like a slow-moving river".