inundation due to heavy rain (july 20-23, 2006)...(0:00 july 16 - 12:00 july 20)...

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)

○ Effect of flood control by Tsuruda Dam

○ 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)

【Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture】

【Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture】

Overview of heavy rain on July 20-23, 2006

Record RainFall in Southern Kyushu Prefectures (Kagoshima, Kumamoto, Miyazaki)

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

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)

Kagoshima 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)

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 careful watching).

Kagoshima

Miyazaki

Kumamoto

熊本県

鹿児島県

宮崎県

Mt. Shibi

０時

０時

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

Total rainfall: over 1,000 mm

紫尾山（鹿児島県さつま町）

0

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70

0時 12時 0時 12時 0時 12時

時間雨量(mm)

0

100200300

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500600

700800900

1000

累加雨量(mm)

７／２０７／２１７／２２

しびさん

山江（熊本県山江村）

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時間雨量(mm)

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やまえ

Note: The numbers are the total of three prefectures (Kagoshima, Kumamoto, Miyazaki).

熊本県

Kagoshima

Miyazaki

Ooita

FukuokaNagasaki

Nagasaki

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

Yamae

人的・住家被害の状況（7月3日～）消防庁調べ：７月２７日　１８：００現在

重傷軽傷床上床下

5 0 2 22 47 22 97 2,045 2,166

死者

人的被害（人）

半壊一部破損

浸水

住家被害（棟）

行方不明者

負傷者全壊Dead Missing

Injured

MinorSerious

Human Damage Housing Damage

Complete Half PartialInundation

Above floor

Below floor

Source: Fire and Disaster Management Agency, As of 18:00, July 27Human and housing damage (Since July 3)

Yamae (Yamae Town, Kumamoto)

Cum

ulative rainfall (mm

)Hou

rly

rain

fall

(mm

)

Mt. Shibi (Satsuma Town, Kagoshima)

Cum


)

Hou

rly

rain

fall

(mm

)

Kumamoto

Miyazaki

Kagoshima

Rainfall

Kumamoto

Daiganji, Miyanojo, Futawatari, Arase, Yamasaki, Satsuma-cho: About 910 flooded houses

Yoshimatsu, Kurino, Yusui-cho: About 560 flooded houses

East China Sea

←Sendai River

Tsuruda DamUchikata, Mukae, Ebino City: About 190 flooded houses

Kuju-cho, Satsumasendai City: About 110 flooded houses

Satsumasendai City

Yusui Town

Ebino CityOguchi City

Damage along Sendai River due to heavy rain (July 2006)

Oguchi City: About 180 flooded houses

Satsuma Town

Sendai River

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

Torai Area Miyanojo, Satsuma Town (July 23)

Hishikari-cho: About 70 flooded houses

Sendai RiverTorai Area, Satsuma Town (July 22)

← Sendai River

Quick Summary as of 13:00, July 27 2006

Hishikari Town

Satsuma Town

◆Chronological events in Torai Area, Satsuma Town7/22 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 for

rescuing 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 levelAs of 14:00 About 600 houses were confirmed to be inundated by the Ministry of Land,

Infrastructure and Transportation.

Damage along Sendai River due to heavy rain (July 2006) 【Torai Area, Miyanojo, Satsuma Town in Kagoshima Prefecture】

Inundated area

①

①

Sendai River

Inundation in the Torai Area

H.W.L 8.74m

ピーク水位 11.66m

ピーク水位＋1.3m

Tsuruda Dam helped reduce the water level by 1.3 meters in Miyanojo, Satsuma Town.

Inundation in the Torai Area (July 23)

11.66m+1.3m

1.3mmissing value

Miyanojo Water Gauge Station

HWL 8.74m

Peak: 11.66m （18:40 July 22）

Water exceeded the design high water level for 25 hours.

Peak water level 11.66m+1.3m (without Tsuruda Dam)

Peak water level 11.66m

advisory warning dangerous Design highspecial warningWater level :

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Effect of flood control by Tsuruda Dam 【Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture】

７／２２７／２３

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

Observed water level Estimated water level without flood control by the Tsuruda Dam

Ele

vatio

n（ｍ）

（T.P.ｍ）

（Time）

Peak water level was delayed appro. 4 hrs.

Reduction of the water level by the Tsuruda Dam

*The values given are from quick summary and may change in the future.

10:50 Recommendation to evacuate

12:00 Request for dispatch of the Self Defense Forces

Evacuation and rescue activities

Torai Area, Miyanojo Satsuma Town in Kagoshima Prefecture＜Sendai River Miyanojo Observation Station （37k700m）＞

Peak water level was reduced by

appro. 1.3 m.

（Water level）Maximum reduction of the water level: appro. 2.5 m

-

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

流入量・放流量(m3/s)

130.00

135.00

140.00

145.00

150.00

155.00

160.00

流入量ｍ3/s

放流量ｍ3/s

貯水位ｍ

貯水位(m)

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累計雨量 mm

As the dam was about full, operation was undertaken to equalize inflow and discharge.

Flood control began at 22:16 July 20

Discharge less than inflow

The dam reduced discharge up to 1280m3/s

at maximum inflow.

The dam stored flood water of about 69 million m3.

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

4,040m3/s

2,760m3/s

*The values given are from quick summary and may change in the future.

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July 20 July 21 July 22 July 23

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

Level of water stored

（ｍ）

Am

ount

of i

nflo

w a

nd d

isch

arge（m

3/s）

Hou

rly ra

infa

ll (m

m) C

umulative rain fall(m

m)

Flood control by Tsuruda Dam (Quick Summary)

162.50

（H.W.L）

（Top of the dam）

Water Level

Hourly rainfall (mm)

Cumulative rainfall (mm)

Inflow (m3/s)

Discharge (m3/s)

Reservoir level (m)

芦北町漆口左岸 41/000家屋床上６戸

球磨川左岸 51/200～300道路冠水(県) L=80m


球磨川左岸 46/600道路冠水(県) L=100m

球磨川左岸 47/700道路冠水(県) ?







球磨川右岸 17/200道路冠水(県) ？

球磨川右岸 24/500道路冠水 L=200m

Sakamoto, Ytsushiro City4 houses flooded above floor level8 houses flooded below floor level

Ogaki area, Hiyoshi City1 houses flooded above floor level

Kuma Village30 houses flooded above floor level29 houses flooded below floor level

Urukuchi Ashikita Town6 houses flooded above floor level

①

Watari Water Gauge Station

Damage along Kuma River due to heavy rain (July 2006)

missing values

Kuma Village, Kumamoto (July 22)

Yatsushiro City, Kumamoto (July 22)

←Kuma River

As of 13:00, July 27, 2006

↑Kuma River

advisory warningspecial

dangerousdesignhighwarningWater level:

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.

(900 houses flooded above floor level; 600 houses flooded below floor level)

・Largest water disaster since Typhoon Dera (June 19, 1949)

Yatsushiro Sea

Overflowing in the upper reach of Hirosebashi Bridge

Overflowing in the lower reach of Kasugabashi Bridge

Inundation in right side of Komenotsu River

Izumi City Office

Izumi City Office

Kasugabashi

Map

Komenotsu River

Hirosebashi

Inundated area

Komenotsu River

As of July 25, 2006

Inundated area

Komenotsu River

大田切

Overview of heavy rain on July 17-19, 2006

Record Rainfall over the Sanin & Hokuriku Regions & Nagano Prefecture

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

横田（島根県奥出雲町）

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0時7/17

12時 0時7/18

12時 0時7/19

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時間雨量(mm)

0

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100

150

200

250

300

350

400

累加雨量(mm)

島根県横田

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

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).

人的・住家被害の状況（7月3日～）消防庁調べ：７月２１日　８：００現在

重傷軽傷床上床下

15 6 7 23 26 6 197 1,445 2,804

死者

人的被害（人）

半壊一部破損

浸水

住家被害（棟）

行方不明者

負傷者全壊

Human and housing damage (Since July 3)Source: Fire and Disaster Management Agency

As of 18:00, July 27

Human Damage Housing Damage

Dead MissingInjured

Serious MinorComplete Half Partial

Inundation

Above floor

Below floor

Hourly & cumulative rainfall (July 18-19)

Hourly (mm) Cumu. (mm)Rainfall at Ootagiri, Tenryu River

Yokota (Okuizumo Town, Shimane Prf.)

Hou

rly

rain

fall

(mm

)

Cum


)

Ootagiri

Yokota

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)

Section managed by MLIT

Lake Suwa

Levee Break

Inundation

Locations of inundation:

Suwa City, Shimosuwa Town, Okaya City

2750 flooded houses including 830 houses flooded above floor level

Okaya City

Suwa CIty

Shimosuwa Town

JR Kamisuwa Station

Emergency recovery operations at a levee break

Tenryu River →

Lake Suwa

→

Near Lake Suwa (Source: Sankei Shimbun)

Around JR Kamisuwa Station

Near Lake Suwa

↑

A levee break (Source: Asahi Shimbun)

A levee break on the right bank of Tenryu RiverMatsushima-kitajima, Minowa Town, Nagano Prefecture

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

Numbers reflect damage as of 6:00, July 28, 2006.

Damage along Tenryu River due to heavy rain (July 2006)

Tenryu River

↓

Tenryu River

Miyagawa River

Lake Shinji Ohashi RIer

Hii River diversion channel

Lake Naka Umi

Downtown Matsue City

Flooded houses: About 1,700 (Quick summary)

Matsue Station

About 320ha

Largest inundation since 1972The water level of the Hii River exceeded the design water level by about 1 meter.

Lake Shinji Lake Naka Um

TaishaB

ay

Ohashi River

Damage along Hii River due to heavy rain (July 2006)

Matsue City (14:00, July 19)

Hii River

Kando

River

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

Shizumi Dam

～～

～～

Numbers reflect damage as of 18:00, July 28,2006

About 110haObara Dam

inundation due to heavy rain (july 20-23, 2006)...(0:00 july 16 - 12:00 july 20)...

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