Kumamoto
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About Kumamoto flood inundation assumption

The last update date:
Department of Civil Engineering Rivers Division 
TEL: 096-333-2506 
FAX: 096-382-3277 
Email kasen@pref.kumamoto.lg.jp

About flood inundation assumption area of Kumamoto

 
 

About flood inundation assumption area

 Flood inundation assumption is in we find smooth at the time of flood and quick evacuation about river which Kumamoto appointed in water level common knowledge river or to prevent the inundation

Area that is assumed the inundation by the rain that is assumed to plan reduction of damage caused by ri flood when the river concerned overflows as flood inundation assumption area

We appoint.

  Based on this flood inundation assumption area figure, hazard map which listed information of correspondence at the time of disaster or position of evacuation site concretely in the municipalities is making
 remasu.
 

About flood inundation assumption area (assumption maximum size)

 In late years outbreak frequency of strong rain increases in each places of the whole country for heavy rain and short time, and localization of heavy rain is tough, and receive background doing, and in May, 2015 Flood Control Law with revision

It became.

  From "the rain of plan scale" conventional by the rain to become premise by this revision in Kumamoto "the largest rain (thing more than plan scale) that can assume"

 We switch to this and are making "flood inundation assumption area figure" (assumption maximum size).

 

 

Contents of flood inundation assumption area and point to keep in mind 

 When river overflows, flood inundation assumption is assumed by the assumed rain (assumption maximum size) when area where the inundation is assumed is flooded

We sought the depth of the water by simulation.

  Area that is not appointed in this inundation assumption area as we still less consider the flooding of faction river, the rain, high tide more than assumptions, the flooding with inland waters

 Case that the inundation produces even if we put in this and the assumed depth of the water may be different from real flood depth.

 

 

Type of flood inundation assumption area figure

  About flood inundation assumption area figure announcing after December 21, 2018, it becomes five kinds of following things.

 

 (1) Flood inundation assumption area figure (assumption maximum size)

   The inundation range that is assumed by the largest rain assumed by the rain that actually fell in the area in the past when dike collapses and flood depth

   Indication

(2) Flood inundation assumption area figure (plan scale)

   When dike collapses by the rain to aim for in the future of river maintenance, we display the assumed inundation range and flood depth

 (3) Flood inundation assumption area figure (the inundation duration)

    After the flooding arrival, we display the time elapsed before it is less than the flood depth after it reached constant flood depth (e.g., 0.5m)

 (4) House collapse the flooding assumption area figure (the flooding style)

    Area with fear of house collapse is displayed by the flooding style from river

 (5) House collapse the flooding assumption area figure (the bank of a river erosion)

    By outflow of basic part caused by erosion of the bank of a river, we display area with fear of house collapse

 

 

 About designation of flood inundation assumption area in water level common knowledge river which Kumamoto manages

   About flood inundation assumption area by assumption maximum size, we appointed all 67 rivers targeting at water level common knowledge rivers in the prefecture in March, 2020.

 

Position figure

 

■River which we appoint in flood inundation assumption area after flood prevention law revision in May, 2015

No

Water system name

River name

Public announcement day

No

Water system name

River name

Public announcement day

 1The Chikugo River The Chikugo River (assumption maximum size) (PDF: 4.97 megabytes) We open with the other window

H31.3.29

35

Cho Tagawa

R2.3.27

 2The Midori River

 Tenmei era Shinkawa (assumption maximum size) (PDF: 4.8 megabytes) We open with the other window

H31.3.29

36

Oda Urakawa

R2.3.27

 3The Midori River Beach Togawa (assumption maximum size) (PDF: 5.07 megabytes) We open with the other window

H31.3.29

37

The Ono River

R2.3.27

 4The Midori River Moisture river (assumption maximum size) (PDF: 4.8 megabytes) We open with the other window

H31.3.29

38

The Ono River

R2.3.27

 5The Midori River kengunkawa (assumption maximum size) (PDF: 5.11 megabytes) We open with the other window

H31.3.29

39

Kitchen knife river

R2.3.27

 6The Midori River

H31.3.29

40

Sunakawa

R1.5.31

 7The Midori River

H31.3.29

41

Vast sheath river

R1.5.31

 8The Midori River

H31.3.29

42

Kawachi River

R2.3.27

 9The Midori River

H31.3.29

43

Sekikawa

R2.3.27

10

The Midori River

H31.3.29

44

Chinese and Korean people River

R1.5.31

11

The Kuma River Mae River (assumption maximum size) (PDF: 3.64 megabytes) We open with the other windowH30.12.21

45

Great Miyaji River

R2.3.27

12

The Kuma River Chest river (assumption maximum size) (PDF: 4.17 megabytes) We open with the other window

H30.12.21

46

Tsunagi River

R2.3.27

13

The Kuma River The Kawabe River (assumption maximum size) (PDF: 3.64 megabytes) We open with the other window H30.12.21

47

Urakawa Urakawa (assumption maximum size) (PDF: 4.59 megabytes) We open with the other window

 R2.3.27

14

The Kuma River

 H30.12.21

48

Hata River

 R2.3.27

15

Shirakawa

 Shirakawa (assumption maximum size) (PDF: 7.08 megabytes) We open with the other window

H31.3.29

49

Inner Nogawa

R1.5.31

16

Shirakawa 

 H31.3.29

50

Five orders river

R1.5.31

17

The Kikuchi River 

 The Kikuchi River (assumption maximum size) (PDF: 5.24 megabytes) We open with the other window

H30.12.21

51

The Sakai River

 R1.5.31

18

The Kikuchi River 

H30.12.21

52

1,000 ken of world

 R1.5.31

19

The Kikuchi River 

H30.12.21

53

Yokegawa

 R1.5.31

20

The Kikuchi River

H30.12.21

54

Net Tsugawa

R2.3.27

21

The Kikuchi River

 Iwano River (assumption maximum size) (PDF: 4.32 megabytes) We open with the other window

H30.12.21

55

Hanging light with a paper shade river R1.5.31

22

 The Kikuchi River Goshi River (assumption maximum size) (PDF: 5.46 megabytes) We open with the other window H30.12.21

56

The Kagami River R1.5.31

23

 The Kikuchi River Riverbank River (assumption maximum size) (PDF: 2.25 megabytes) We open with the other window H30.12.21

57

Wadi R1.5.31

24

 The Tsuboi River

 The Tsuboi River (assumption maximum size) (PDF: 6.67 megabytes) We open with the other window

 R1.5.31

58

The Hirose River R1.5.31

25

 The Tsuboi River The Iseri River (assumption maximum size) (PDF: 6.75 megabytes) We open with the other window

 R1.5.31

59

Shiki River R2.3.27

26

 The Tsuboi River

 R1.5.31

60

Town Yamaguchi River R1.5.31

27

 End of line river

 R2.3.27

61

Shimotsu Fukae River R2.3.27

28

 Hikawa

 R1.5.31

62

Taura River R2.3.27

29

 Hikawa

 R1.5.31

63

ryugokawa R2.3.27

30

 Futami River

 R2.3.27

64

Now Tomikawa R2.3.27

31

 Sashiki River

 R2.3.27

65

Matsubara River R2.3.27

32

 Urakawa of hot water

 R2.3.27

66

Now Izumikawa R2.3.27

33

 Minamata River

 R2.3.27

67

Kotsufukae River R2.3.27

34

 Minamata River

 R2.3.27

    

  

   (in the inundation assumption area figure in country direct control river in Kumamoto)

       ○Shirakawa, the Midori River water system With new window(external link)     ○The Kikuchi River water system With new window(external link)    

       ○The Kuma River water system With new window(external link)       ○The Chikugo River water system With new window(external link) 

 

 

Finally

   While, in Kumamoto, carrying out hardware measures steadily sequentially, tori of genwazawai by soft measures such as hazard map making support to the municipalities

  We will push forward composing type.

 

 

 

We relate to this page
Inquiry

Department of Civil Engineering Rivers Division
Telephone: 096-333-2506
Fax: 096-382-3277
Email kasen@pref.kumamoto.lg.jp
(ID: 27919)
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Kumamoto prefectural government office   〒 862-8570  6-18-1, Suizenji, Chuo-ku, Kumamoto-shi, Kumamoto Tel: 096-383-1111 (main)
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