
曾文水庫水位於9月30日深夜達標高230.04公尺,將以滿水位進入10月,為2018年以來同期新高。水庫持續供應嘉南地區農業灌溉,雖上游入流量下降將調度至烏山頭水庫,但總蓄水量逾5.4億立方米,南化水庫蓄水率超過95%,水情穩定。
AI-generated summary
曾文水庫正常滿水位依季節變化:5月上旬至8月下旬為228公尺,9月上旬至9月下旬為229公尺,10月上旬至隔年4月下旬為230公尺。2018年9月完成大壩不透水心層提升工程後,滿水位從227公尺調整為230公尺。
曾文水庫以230公尺的滿水位進入10月份,8年來同期新高。(記者吳俊鋒攝)
首次上稿 10-01 00:08
更新時間 10-01 07:45
中秋已過,汛期逐漸進入尾聲,國內規模最大的曾文水庫持續供應農業灌溉,在水利署南區水資源分署全力調控下,將以逾230公尺水位的100%蓄水率進入10月,水位是近8年來同期新高。
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依照曾文水庫的操作規範,正常滿水位值在5月上旬到8月下旬為標高228公尺,9月上旬到9月下旬為標高229公尺,10月上旬到隔年4月下旬為標高230公尺;而曾文水庫也是於2018年9月起,因已完成大壩不透水心層提升工程,通過安全評估,將滿水位從原標高227公尺,調為標高230公尺。
南水分署觀測,截至9月30日深夜11點,曾文水庫的水位標高為230.04公尺,將以滿水位進入10月份,為2018年以來的同期新高,不過2023、2024年,也都曾在10月份之間,一度達到標高230公尺的滿水位。
南水分署也提到,目前持續嘉南地區二期稻作供灌,近來集水區並無明顯降雨,上游入流量大幅下降,未來將調度水資源到烏山頭水庫,曾文水庫水位就會逐漸下降。
至於9月15日後,重新啟動曾文南化聯通管,由南化水庫北送烏山頭水庫蓄存,考量目前時序逐漸進入枯水期,集水區降雨與入流趨緩,優先以引水蓄存於南化水庫方式操作,南水分署10月1日起,暫停聯通管的南化水庫輸水至烏山頭水庫作業。
現階段曾文、烏山頭灌區二期稻作處於本田期(指作物從插秧到本田生長至成熟收割的生長期),採「供9停5」方式供灌,但會視稻作實際生長情形配合調整供灌時程;目前曾文、烏山頭水庫合計有效蓄水量仍逾5.4億立方米,供應民生用水的南化水庫蓄水率也高於95%,水情穩定,南水分署仍籲請民眾持續養成節約用水的好習慣,愛惜珍貴的水資源。
AI outlook — possibilities, not facts
曾文水庫水位將隨著上游入流量下降而逐漸下降
Likely · Within weeks
南水分署將於10月1日起暫停曾文南化聯通管南化水庫輸水至烏山頭水庫作業
Very likely · Within days

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