3天「灌進1座日月潭」!曾文水庫灌飽 花4天狂洩掉 - 台南
By Rosalind
at 2021-08-07T07:17
at 2021-08-07T07:17
Table of Contents
YouTube-20210807曾文水庫洩洪直播(經濟部水利署南區水資源局)
https://www.youtube.com/watch?v=bKCqVPP6FzE
3天「灌進1座日月潭」!曾文水庫灌飽 花4天狂洩掉
2021/08/07 05:56 自由時報即時新聞 記者吳俊鋒/台南報導
國內規模最大的曾文水庫上游劇烈降雨,3天累積入流量達1.2億立方米,接近1座日月潭
的有效蓄水量「灌飽」,水利署南區水資源局啟動防汛操作,展開調節性放水。只是盧碧
颱風降為熱帶低壓後,外圍環流持續帶來豐沛水氣,溢洪道放水量也持續加大,截至昨晚
,4天時間就已經全部流掉。
根據南水局的觀測資料,截至昨晚10點,曾文水庫上游最近1週的累積降雨高達680毫米,
頗為驚人,因處於高水位,入流量大,放水量也多。
1週前,上游降雨豐沛,曾文水庫蓄水率飆升,超過防汛操作的高水位,南水局2日下午啟
動暌違近2年的調節性放水。
當時先進行小流量放水,隔天加開溢洪道大規模放水,集水區降雨趨緩後,先暫時關閉,
但仍透過發電、PRO或防淤隧道等,持續調節性放水。
昨天上午又達到標高228公尺的正常滿水位,南水局再次開啟溢洪道大規模放水,最高每
秒達1700立方米,包含了溢洪道放水的1650立方米,以及發電放水的50立方米,放流量不
小。
截至晚間,曾文水庫調節性放水累積已逾1.4億立方米,遠超過1座日月潭的有效蓄水量,
南水局副局長蘇柄源強調,接下來會視颱風路徑、降雨情況,以及入流量預估等,進行滾
動操作。
https://news.ltn.com.tw/news/life/breakingnews/3630307
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