Inundation due to heavy rain (July, 2006)
Inundation due to heavy rain (July 20-23, 2006)○ Overview of heavy rain on July 20-23, 2006
○ Damage along Sendai River due to heavy rain (July 2006)○ Damage along Sendai River due to heavy rain (July 2006)【Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture】○ Effect of flood control by Tsuruda Dam【Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture】○ Flood control by Tsuruda Dam (quick summary)○ Damage along Kuma River due to heavy rain (July 2006)○ Damage along Komenotsu River (Kagoshima) due to heavy rain (July 2006)

Inundation due to heavy rain (July 17-19, 2006)○ Overview of heavy rain on July 17-19, 2006
○ Damage along Tenryu River due to heavy rain (July 2006)○ Damage along Hii River due to heavy rain (July 2006)

Overview of heavy rain on July 20-23, 2006
Record RainFall in Southern Kyushu Prefectures (Kagoshima, Kumamoto, Miyazaki)
人的・住家被害の状況（7月3日〜）
Humanand housing damage (Since July 3)
Injured
負傷者

Missing5

重傷
Serious

0

軽傷
Minor

2

全壊
Complete2247

半壊
Half

22

一部破損

Partial97

Radar cumulative rainfall in Kumamoto(0:00, July 18 - 18:00, July 23)

やまえ

山江（熊本県山江村）
Yamae (YamaeTown, Kumamoto)Inundation
浸水Above
床上floor

2,045

Below
床下floor

2,166

Note: The numbers are the total of three prefectures (Kagoshima, Kumamoto, Miyazaki).
Status of rivers under the governmental management in all Kyushu(as of 6:00 July 24)
4 river systems & 6 rivers exceeded the dangerous water level (the level very close to flooding).
8 river systems & 15 rivers exceeded the warning water level (the level requiring carefulwatching).

4070035600305002520400300

1510200

5100

000時

12時

0時

７／２０12時

７／２１0時

12時

累加雨量(mm)
Cumulative
rainfall (mm)

行方不明者

死者
DeadHousing
Damage
住家被害（棟）

時間雨量(mm)
Hourlyrainfall (mm)

Human
Damage
人的被害（人）Source: Fire and Disaster Management Agency,
As of 18:00,July 27
消防庁調べ：７月２７日
１８：００現在

Fukuoka
Nagasaki

Ooita
Kumamoto

熊本県

Nagasaki

Yamae
Miyazaki

０時

７／２２

Radar cumulative rainfall in Kyushu(0:00, July 18 - 18:00, July 23)

Kagoshima

Radar cumulative rainfall in Kagoshima(0:00, July 18 - 18:00, July 23)

しびさん

紫尾山（鹿児島県さつま町）
Mt. Shibi(Satsuma Town, Kagoshima)

Kumamoto

熊本県
Miyazaki

宮崎県
鹿児島県
Kagoshima

Rainfall

時間雨量(mm)
Hourlyrainfall (mm)Kumamoto

60
504030201000時

12時

７／２０0時12時

７／２１0時

12時

７／２２

累加雨量(mm)
Cumulative
rainfall (mm)

1000
900
800
700
600
500
400
300
200
100070

Mt. Shibi

MiyazakiKagoshima

０時

Kumamoto Prefecture had a mean monthly rainfall in three days.

□Yamae Precipitation Station for the Kuma River system recorded a total of the 72 hour rainfall on
July 20-22:６３４mm （approximately 1.2 times the mean July rainfall in Kumamoto)Total rainfall: over 1,000 mmKagoshima Prefecture had 1.5 times the mean monthly rainfall in three days.

□Mt. Shibi Precipitation Station for the Sendai River system recorded a total of the 72 hour rainfall
on July 20-22:
８８６mm （approximately 1.6 times the mean July rainfall in Kagoshima)

Damage along Sendai River due to heavy rain (July 2006)
Torai Area, Satsuma Town (July 22)

aidnSeYoshimatsu, Kurino, Yusui-cho:
About 560 flooded housesveRirTorai Area Miyanojo, Satsuma Town
(July 23)

Oguchi City
Ebino City

Oguchi City:
About 180 flooded houses
Hishikari Town
Daiganji, Miyanojo, Futawatari,Arase, Yamasaki, Satsuma-cho:
About 910 flooded houses

Tsuruda Dam←

Satsuma Town

SendUchikata, Mukae, Ebino City:
About 190 flooded houses
aiRiv

East China Sea

er

Yusui Town

Hishikari-cho:
About 70 flooded houses← Sendai River

Around the Yoshimatsu public
offices in Yusui-cho (July 23)

Kuju-cho,
Satsumasendai City:
About 110 floodedhouses

Satsumasendai CityQuick Summary as of 13:00, July 27 2006

rRiveiadSen

Damage along Sendai River due to heavy rain (July 2006) 【Torai Area, Miyanojo, Satsuma Town in Kagoshima Prefecture】
Tsuruda Dam helped reduce the water level by 1.3 meters in
Miyanojo, Satsuma Town.

Miyanojo Water Gauge Station
Water exceeded the design
high water level for 25 hours.
missing value

ピーク水位11.66mPeakwater level11.66mHWL 8.74m

advisory

warning

special warning

1.3m

H.W.L 8.74m

Peak: 11.66m （18:40 July 22）

Water level :11.66m+1.3mピーク水位＋1.3m
Peakwater level11.66m+1.3m (without Tsuruda Dam)dangerous

Design high①

Satsuma Town①

Inundated area
Inundation in the Torai Area (July 23)◆Chronological events in Torai Area, Satsuma Town
7/22 10:00 Satsuma Town Disaster Response Headquarters was established.
10:55 Evacuation recommendation was issued （308 households, a total of 711 people）.
11:30 Water exceeded the design high water level at the Miyanojo Water Gauge Station.
11:45 Request for dispatching the Self Defense Forces (SDF) to Kagoshima was made forrescuing isolated residents.
12:25 Evacuation order was issued (911 households, a total of 2,124 people).
Past 13:00 60 SDF members arrived and began rescuing by boat.
14:40 Tsuruda Dam began operation for extraordinary flood.
19:17 SDF confirmed no isolated resident was left from the air by helicopter.
7/23 13:00 The water level at the Miyanojo Water Gauge Station went below the design high level
As of 14:00 About 600 houses were confirmed to be inundated by the Ministry of Land,
Infrastructure and Transportation.

Inundation in the Torai AreaSendaiRiv e rEffect of flood control by Tsuruda Dam【Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture】*The values given are from quick summary and may change in the future.
Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture＜Sendai River Miyanojo Observation Station （37k700m）＞（T.P.ｍ）
33（Water level）
Maximum reduction of the waterlevel: appro. 2.5 m

32

Observed waterlevel
Estimated waterlevel without floodcontrol by theTsuruda Dam

Peak water level
was reduced byappro. 1.3 m.

31
Reduction of the water level bythe Tsuruda Dam

302827The blue line indicates the waterlevel at which Inundation is assumed
to begin. T.P. appro. 27 m

26

Peak water level was delayed appro. 4 hrs.

25
24

Evacuation and rescue activities

12:00 Request for dispatch of the Self Defense Forces

７／２３（Time）

10:50 Recommendation to evacuate

12:00

11:00

10:00

9:00

8:00

7:00

6:00

5:00

4:00

3:00

2:00

1:00

23:00

22:00

21:00

20:00

19:00

18:00

17:00

16:00

15:00

14:00

13:00

12:00

24:00:00

７／２２

11:00

10:00

9:00

8:00

7:00

6:00

5:00

4:00

3:00

2:00

1:00

23
24:00:00

Elevation（ｍ）

29

Flood control by Tsuruda Dam (Quick Summary)*The values given are from quick summary and may change in the future.

Hourly rainfall (mm)

0.0

10.0

200.0

20.0

400.0

30.0

Hourly rainfall (mm)
時間雨量mm
Cumulative rainfallmm
(mm)
累計雨量

40.0
50.0

600.0
The total rainfall from 21:00 July 18 to 13:00 July 23:
969 mm (average rainfall in the catchment area of thedam)

800.0
1000.0
貯水位(m)

流入量・放流量(m3/s)

5,000

Water Level

4,5003/s)
流入量ｍ3/s
Inflow (mDischarge(m3/s)
放流量
ｍ3/sReservoirlevel(m)
貯水位 ｍ

3,500

The dam reduced
discharge up to 1280m3/s
at maximum inflow.

3,000

160.00155.00150.002,760m3/s

2,500
2,000
1,500

（Top of the dam）

145.00Discharge less than inflow

140.00Flood control beganat 22:16 July 20

The dam stored flood waterof about 69 million m3.

1,000

135.00500

The Tsuruda Dam contributed to mitigating inundation by storing flood
water of about 69 million m3 and controlling discharge to the lower reaches.

130.00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
0:00
1:00
2:00
3:00
4:005:00
6:00
7:00
8:00
9:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
0:00
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
0:00
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:00
11:00
12:00
13:00

July 20

July 21

July 22

July 23

Level of water stored（ｍ）

Amount of inflow and discharge（m3/s）

4,000

162.50（H.W.L）
As the dam was about full,operation was undertaken toequalize inflow anddischarge.

4,040m3/s

Cumulative rain fall(mm)

(mm)
0.0

Damage along Kuma River due to heavy rain (July 2006)
Watari Water Gauge Station

Sakamoto, Ytsushiro City
4 houses flooded above floor level
8 houses flooded below floor levelmissing values

球磨川 右岸 17/200
道路冠水(県) ？

Water level:

Yatsushiro
City, Kumamoto(July 22)
球磨川
左岸 27/000〜200
道路冠水(県) L=200m

advisory①
warning

specialwarning

dangerous

designhigh↑Kuma River
球磨川 右岸 24/500
Kuma Village
道路冠水 L=200m
30 houses flooded above floor level
29 houses flooded below floor level

球磨川 左岸 27/700〜800
道路冠水(県) L=50m
球磨川 左岸 34/400
道路冠水(県) L=15m
球磨川 左岸40/200〜300
芦北町漆口
左岸 41/000
道路冠水(県)
L=100m
家屋床上６戸

球磨川 左岸 51/700〜800
道路冠水(県) L=50m

球磨川 左岸 42/800
道路冠水(県) L=30m←Kuma River
Urukuchi Ashikita Town
6 houses flooded above floor level

球磨川 左岸 45/500〜600
球磨川 左岸 46/600
道路冠水(県) L=60m
道路冠水(県)
L=100mOgaki area, Hiyoshi
City
1 houses flooded above floor level

球磨川 左岸 51/200〜300
道路冠水(県) L=80m
球磨川 左岸 47/700
道路冠水(県) ?

Kuma Village, Kumamoto (July 22)

As of 13:00, July 27, 2006

Damage along Komenotsu River (Kagoshima) due to heavy rain (July 2006)
・Record continuous rainfall of 900 mm was observed at Izumi-okawauchi Observation Station.
・The water level of the Komenotsu River exceeded the dangerous water level at Kasugabasi Water Gauge Station.
・Overflow occurred at 3 points along the Komenotsu River in downtown Izumi City.

Map(900 houses flooded above floor level; 600 houses flooded below floor level)・Largest water disaster since Typhoon Dera (June 19, 1949)
Komenotsu River

Komenotsu River
Yatsushiro Sea
Komenotsu River

Izumi City Office
Inundated area

Overflowing in the upper reachof Hirosebashi Bridge

Overflowing in the lower reach of
Kasugabashi Bridge
Izumi CityOffice

Kasugabashi

Hirosebashi

Inundated area

Inundation in right side of Komenotsu River

As of July 25, 2006

Overview of heavy rain on July 17-19, 2006
Record Rainfall over the Sanin & Hokuriku Regions & Nagano Prefecture
Source: Fire and Disaster Management Agency

Humanand housing damage (Since July 3)
人的・住家被害の状況（7月3日〜）

As of 18:00, July 27

消防庁調べ：７月２１日 ８：００現在

Human Damage
人的被害（人）

行方不明者

Dead
死者

Housing Damage
住家被害（棟）
Injured
負傷者
Complete
全壊

Missing

156Serious
重傷

一部破損

Half
半壊

Partial

Minor
軽傷

723

266197

Hourly & cumulative rainfall (July 18-19)

浸水
Inundation
Above
床上
floor

1,445

Hourly (mm)Rainfall at Ootagiri, Tenryu River

Cumu. (mm)Below
床下floor

大田切

2,804

Ootagiri

Status of rivers under the governmental management in Sanin, Hokuriku & Nagano(as of 6:00 July 24)
11 rivers exceeded the dangerous water level (the level very close to flooding).
61 rivers exceeded the warning water level (the level requiring careful watching).
Radar cumulative rainfall in Chubu(0:00 July 16 – 12:00 July 20)

Rader cumulative rainfall(0:00 July 16 - 12:00 July 20)
4003530350
3002520250
200

1510150
100

5050
0

Cumulative
rainfall (mm)
累加雨量(mm)

時間雨量(mm)
Hourlyrainfall (mm)Yokota(Okuizumo Town, Shimane Prf.)
横田（島根県奥出雲町）

40

島根県

横田
Yokota0時 12時 0時 12時 0時 12時
7/17
7/18
7/19

Radar cumulative rainfall in Chugoku(0:00 July 16 – 12:00 July 20)

Nagano Prefecture had three times the mean monthly rainfall in three days.
□Ootagiri Precipitation Station for the Tenryu River system recorded:
５２９mm （approximately 2.6 times the mean July rainfall in Nagano)

Shimane Prefecture had a mean monthly rainfall in three days.
□Yokota Precipitation Station for the Hii River system recorded:

３３５mm （approximately 1.4 times the mean July rainfall in Shimane)Damage along Tenryu River due to heavy rain (July 2006)
Numbers reflect damage as of
6:00, July 28, 2006.

Locations of inundation:
Suwa City, Shimosuwa Town, Okaya City
2750 flooded houses including 830 houses flooded above
floor level

JR Kamisuwa Station
Shimosuwa Town
Okaya City
Around JR Kamisuwa Station
Suwa CIty

Lake Suwa↑Inundation

Tenryu River
Section managedby MLIT

The indicated inundated areas are
based on aerial photos and hearings.

A levee break (Source: Asahi Shimbun)

Tenryu River

Near Lake Suwa

↓Lake Suwa

Levee BreakTenryu River →Emergency recovery operations at a levee
break→
Miyagawa RiverA levee break on the right bank of Tenryu River
Matsushima-kitajima, Minowa Town, Nagano Prefecture

Near Lake Suwa (Source: Sankei Shimbun)

Damage along Hii River due to heavy rain (July 2006)
Numbers reflect damage
as of 18:00, July 28,2006

Around JR Matsue Station:(14:00, July 19)

Matsue City (14:00, July 19)

Largest inundation since 1972

Downtown Matsue City

Flooded houses: About 1,700(Quick summary)〜

About320ha

About 110ha

ndoRiver

Obara Dam

Ka〜

Taisha Bayrev
Ri

Hii River diversion channel

Shizumi Dam

Lake Naka Um

Lake ShinjiÆThe water level of the Hii River
exceeded the design water levelby about 1 meter.

iHiOhashi River

Lake Naka UmiMatsue Station
Lake Shinji

Ohashi RIer