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Back曾文水庫持續滿水位 調節性放水中
曾文水庫持續滿水位 調節性放水中
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自由时报11 hours agoEnvironment1 min readChina

曾文水庫持續滿水位 調節性放水中

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曾文水庫因上游降雨豐沛,自8月24日起達滿水位並持續調節性放水,目前蓄水率維持100%,每秒放水75立方米,累計進水量已超過翡翠水庫有效容量。

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Why It Matters

曾文水庫是台灣規模最大的水庫,位於台南市。受低壓渦旋和西南風影響,近期集水區降雨豐沛導致水位上升。

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上游降雨明顯,曾文水庫持續滿水位。(記者吳俊鋒攝)

受到低壓渦旋頻繁擾動,以及西南風帶來水氣等影響,規模居國內之冠的曾文水庫,集水區近半個月降雨豐沛,累計進水達3.8億立方米,已超過1座全台第2大的翡翠水庫有效容量,相當驚人。

因集水區降雨驚人,原本蓄水率低於7成5的曾文水庫,迅速被「灌飽」,8月24日達到滿水位,持續調節性放水迄今。

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水利署南區水資源分署統計,8月19日以來,曾文水庫集水區累積降雨逾725毫米,上游逕流豐沛,迄今進水量已超過1座翡翠水庫。

而從8月24日開始進行調節性放水以來,已洩掉2.1億立方米,也超過了1座石門水庫的有效容量。

曾文水庫蓄水率維持100%

目前曾文水庫持續調節性放水,每秒75立方米,南水分署籲請下游居民遠離河岸,注意安全。

南水分署觀測,截至今夜11點,曾文水庫的水位標高為229.87公尺,蓄水率仍是100%,連同烏山頭水庫的合計有效蓄水量逾5.59億立方米。

Open Questions

  • 調節性放水將持續多久?
  • 是否會影響下游灌溉或生態?

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This article was originally published by 自由时报.

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