- 18 Jan 2005
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- #101
That's right, Tokyo is the largest underground empire.Tokyo already has these kinds of channels and reservoirs but they are building more.
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Tokyo builds Japan's biggest underground flood control space in anti-disaster megaproject - The Mainichi
TOKYO -- The government of Japan's capital has started work on a megaproject to improve its disaster prevention infrastructure by the 2040s, includingmainichi.jp
This is an article from a year ago:
"Flood control: Tokyo plans to extend one of the largest underground regulating reservoirs in the country (July 25, 2023)."
Tokyo is advancing plans to extend its underground flood-control tunnels to one of the largest in the nation. We got an inside look at its facilities.
The Shirako River Regulating Reservoir, completed in 2017, is a 3.2-kilometer-long underground tunnel connecting the Shakujii River to the Shirako River in Tokyo's Nerima Ward.
The tunnel has a diameter of 10 meters and can store approximately 210,000 cubic meters of water, equivalent to 700 swimming pools, during periods of heavy rainfall.
During Typhoon Hagibis in 2019, the reservoir stored about 180,000 cubic meters of water, preventing flooding in downstream areas of the Shakujii River.
Tokyo is also constructing additional regulating reservoirs southeast of the Shakujii River. By 2025, they plan to complete one of the largest underground regulating reservoirs in Japan, spanning 13 kilometers in length and capable of holding approximately 1.4 million cubic meters of water.
東京都こどもホームページ
東京都こどもホームページへようこそ!みんなの意見をたくさん聞いて、一緒に作ったホームページ。東京の小学生みんなが、今と未来のみんなのために楽しく学べるページを目指しているよ。
The financial power disparity between Tokyo and other regions is overwhelming.
In fiscal year 2022, Tokyo's general account budget reached a record-high ¥7.801 trillion.
When combined with special accounts and public enterprise accounts, the total budget for the Tokyo Metropolitan Government amounts to ¥15.3939 trillion (simple total), which is roughly equivalent to the national budget of countries like Sweden.
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