20170125 美國；加州；水災

by admin · 2017 年 9 月 2 日

20170222 美國；加州；舊金山暴風雨

舊金山暴風雨強襲　500人疏散上百班機取消

暴風雨來襲，舊金山灣區500人疏散。翻攝CBS
2017年02月21日19:14
美國舊金山灣區昨（20日）受到暴風雨侵襲，各地因暴雨及颶風影響傳出淹水、土石流、斷電及道路封閉等災情，加州中央谷地（Central Valley）晚間更緊急疏散近500位居民。
根據《水星報》（Mercury News）及美國國家廣播公司（NBC）報導，加州中部受到此次暴風雨影響最為劇烈，最大雨量落在蒙特瑞郡（Monterey County）的著名風景區「大索爾」（Big Sur），24小時內降雨量達到5.91英吋（約150毫米），住在卡梅爾河（Carmel River）河畔的居民也被告知撤離。
雨勢也造成陸上交通秩序大亂，北邊的聖塔克魯茲（Santa Cruz）的17號公路山區路段及南向部分道路，因倒塌的樹木及土石流於周一下午暫時封閉。南灣區聖荷西的280號州際公路也因為淹水而禁止通行。
除此之外，舊金山國際機場亦受到嚴重干擾，近300個航班延誤，100架班機遭到取消。各地現無傷亡消息，僅傳出聖荷西2名街友受困於溪水暴漲的野狼溪（Coyote Creek），並且已於當日下午獲救。（陳其仙／綜合外電報導）

20170213 美國；加州；水災

(02/13) 美國加州北部奧羅維爾鎮附近大水壩（美國最高水壩）有一條輔助排洪道有倒塌的危險，奧羅維爾鎮皆可能受到威脅，該小鎮住了大約16260人，當局星期日(2/12)下令緊急疏散住在水壩下面小鎮的居民。

美國全國最高水壩恐崩塌　13萬人疏散

1/1奧羅維爾大水壩於1962至1968年建造，主體高達230公尺（770呎），成為全美最高的水壩。AP

美國全國最高的水壩、位於加州北部奧羅維爾鎮附近的大水壩有一條輔助排洪道有倒塌的危險，當局星期日下令住在水壩下面小鎮的居民緊急疏散，之後將疏散人數擴大至13萬人，居民爭相駕車離開，附近交通擠塞。

北加州比尤特縣行政司法長官辦事處在社交網站張貼告示，內容說：「奧羅維爾鎮低窪地區及下游一帶的居民都要立即疏散，離開家園。這『不是』演習。這『不是』演習。這『不是』演習。」

加州水利部門也於美國西岸時間星期日下午4時半左右在Twitter發布訊息，預測那條排洪道會在未來1小時內抵受不住而倒塌。

出問題的是加州聖克拉門抵市以北105公里外的奧羅維爾湖水壩。工作人員較早時進行檢查時發現其中一條輔助排洪道有大面積的石屎塊剝落。州政府部門和工程人員上周四採取緊急措施，小心翼翼排洪，以減輕水壩的壓力。

那座水壩位於奧羅維爾鎮以東的上游位置，該個小鎮住了大約16260人。萬一排洪道倒塌，他們都可能受到威脅。當局局星期日下令住在水壩下面小鎮的居民緊急疏散，之後更將疏散人數擴大至13萬人。

奧羅維爾大水壩於1962至1968年建造，主體高達230公尺（770呎），成為全美最高的水壩，比位於亞利桑那州和內華達州交界處的著名胡佛水壩還高出12公尺（40呎）。

建立時間：11:36

更新時間：15:25

資料來源1：[頭條日報]美國全國最高水壩恐崩塌　13萬人疏散

Oroville Dam risk: Thousands ordered to evacuate homes

From the section US & Canada

Media captionWater flows from Oroville Dam’s emergency spillway for first time in history
More than 180,000 people in northern California have been told to evacuate their homes after an overflow channel at the tallest dam in the US was weakened by heavy rainfall.
The emergency spillway of the 770 ft (230m) tall Oroville Dam was close to collapse, officials said.
The excess water has now stopped flowing.
However, late on Sunday Butte County Sheriff Kory Honea said the evacuation orders remained in place.
Water levels in the reservoir have risen following heavy rain and snow after years of severe drought.
It is the first time that Lake Oroville has experienced such an emergency in the dam’s near 50-year history.
The California Department of Water Resources said earlier on Sunday afternoon that it was releasing as much as 100,000 cubic feet (2,830 cubic metres) of water per second from the main spillway to try to drain the lake.
In a statement posted on social media on Sunday afternoon, the sheriff for the area around the Lake Oroville dam ordered residents to evacuate, repeating three times that it was “NOT a drill”.

The local sheriff’s evacuation order, posted on Facebook, was shared over 14,000 times by Sunday evening

Water flows over the emergency spillway at Lake Oroville for the first time in its near 50-year history

Residents of Oroville, a town of 16,000 people 65 miles (105km) north of Sacramento, were told to head north.

There was gridlock on roads heading out of the town, with some evacuees complaining that they should have been given more warning.

Butte County’s official Twitter feed shared news of emergency shelters, and reported that many hotels were fully booked in the wider area.

Other cities affected should follow orders from their local law enforcement agencies, officials said.

A highway patrol officer directs traffic as residents evacuate Marysville, a Californian town south of Oroville Dam

Workers inspecting part of the Lake Oroville spillway earlier in the week

Earlier in the week engineers began releasing water from the dam after noticing large chunks of concrete were missing from a spillway.

On Friday, California Governor Jerry Brown asked the Federal Emergency Management Agency to declare a major disaster due to flooding and mudslides brought on by storms.