Visiting 9 cities in Japan - Oct and Nov 2016 - Page 7 - 593

I believe all this is somewhat man made, and needs constant dredging, there were 3 such areas being repaired with heavy machinery.

Camera Details: SONY, DSC-RX100
Settings: 1/250 at f/5.6, ISO 125, 37 mm
Date: 03 November 2016 Time: 13:01:04