Japan is a very wet country, so you can definitely find many rivers. But in cities, rivers seem very artificial. Their courses are straight, or have an unnatural curve or angles. The riverbed is often concrete for small rivers, and the riverbanks are also concrete. During rainy season and typhoons, natural rivers can spill over their banks and flood areas. In urban areas, they are controlled. Bigger rivers may be more natural in some places, though. This picture is a river next to my apartment.
“Show Me Japan” is still going strong! This post is taking part in the 10th one.