Johannis de Rijke was a Dutch civil engineer and a foreign advisor to the Japanese government in Meiji period Japan. He made significant contributions in the enhancement of Japan's river systems and the development of its port facilities, which were vital in the industrialisation and infrastructure advancement of the nation during the Meiji era.

Kaizu is a city located in Gifu, Japan. As of 1 April 2018, the city had an estimated population of 34,960, and a population density of 310 persons per km2, in 12,167 households. The total area of the city was 112.03 square kilometres (43.26 sq mi). Most of the city is located at sea level and is well known for levees surrounding the area.