■ Summary of the Project

Typhoon Kathleen which stuch in the Kanto Region caused sever floodingin each area of east Japan by heavy rains in Sept.1947. Especially, Tone River overflowed heavily to an unprecedented level and collapsed levee around Kurihashi. After two days and a half, the overflowed water reached Tokyo and damaged it seriously. Now, 60 years has passed. As flood prevention work has progressed, the possibility of small and middle scale floods is decreasing. However, the damage could be larger if flood once happened.
It could not be called the flood risk has gone with the fact of the heavy flood in 1998. This exhibition project lets us recognize the disaster risk by land conditions and utilize it for danger avoidance. The project focuses on the relationship between the Tone River flood and its land conditions.


Learn Lessons from Typhoon Kathleen

1.What is Tone River?

  1. 1.1 Shape of Tone River
  2. 1.2 Changing River Channel
  3. 1.3 Repeated Flood
  4. 1.4 Tone River Water Volume Distribution

2. Typhoon Kathleen and Tone River Overflow

  1. 2.1 Meteorological Overview
  2. 2.2 Levee Break of Tone and Watarase River
  3. 2.3 Flood Level of Tone River

3. Damage Discription

4. Tone River Overflow

  1. 4.1 Land Form and Overflowed Area of the Kanto Plain
  2. 4.2 The Overflowed Situation
    (1)Situation of Levee Break Point
    (2)Expansion of Flooded Areas
    (3)River Overflow Devastating Tokyo

5. If Levee Break Once Happened?


1 Material Related Tone River Basin

  1. Location Map of Tone River

2 Meteorological Data

  1. Weather Map

3 Maps of Flooded Area

4 Photo Gallery

  1. National Archives and Records Administrationin U.S.
  2. Saitama Flood Damage History
  3. Tokyo Flood Damage History
  4. Present Situation

5 Material List on Typhoon Kathleen

6 inks

  1. Hazard Maps
  2. Organizations

Exhibition Project Commemorating the 60th Anniversary of Typhoon Kathleen