Inundation due to heavy rain (July 20-23, 2006)...(0:00 July 16 - 12:00 July 20)...
Transcript of 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
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Radar cumulative rainfall in Kagoshima (0:00, July 18 - 18:00, July 23)
Total rainfall: over 1,000 mm
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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)
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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
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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】
7/22 7/23
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
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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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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
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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 45/500~600道路冠水(県) L=60m
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 左岸 42/800道路冠水(県) L=30m
球磨川 左岸 34/400道路冠水(県) L=15m
球磨川 左岸 27/000~200道路冠水(県) L=200m
球磨川 左岸 40/200~300道路冠水(県) L=100m
球磨川 左岸 27/700~800道路冠水(県) L=50m
球磨川 左岸 51/700~800道路冠水(県) L=50m
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
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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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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.)
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Cum
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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