324
K. Takao . B.T. Bower
Fig. 18.1. Satellite view of Tokyo Bay and surrounding area
hills beneath the plateau have been inhabited since the Stone Age, as is indicated by a
number of shell mounds found in the area. In 1603, Ieyasu Tokugawa founded his
shogunate in Edo (now called Tokyo), where residential, official, and commercial areas developed rapidly around his castle. Early expansion of Edo took place mostly in
its low-lying areas to the east of the castle, and early land reclamation to expand habitable land began around the estuary of the Sumida river.
An important project in the Edo Era was the diversion of most of the flow of the
Tone river outside the drainage basin of Tokyo Bay to join the Kinu river to flow eastbound to Chosi. This project was aimed at mitigating the risk of flooding in Edo. The
diversion of the Tone river resulted in shrinkage of the drainage area of Tokyo Bay by
almost half, thereby decreasing freshwater inflpw to the bay.
K. Takao . B.T. Bower
Fig. 18.1. Satellite view of Tokyo Bay and surrounding area
hills beneath the plateau have been inhabited since the Stone Age, as is indicated by a
number of shell mounds found in the area. In 1603, Ieyasu Tokugawa founded his
shogunate in Edo (now called Tokyo), where residential, official, and commercial areas developed rapidly around his castle. Early expansion of Edo took place mostly in
its low-lying areas to the east of the castle, and early land reclamation to expand habitable land began around the estuary of the Sumida river.
An important project in the Edo Era was the diversion of most of the flow of the
Tone river outside the drainage basin of Tokyo Bay to join the Kinu river to flow eastbound to Chosi. This project was aimed at mitigating the risk of flooding in Edo. The
diversion of the Tone river resulted in shrinkage of the drainage area of Tokyo Bay by
almost half, thereby decreasing freshwater inflpw to the bay.