本地集水 儘管香港地勢起伏，但雨水收集和儲存系統完備且覆蓋廣泛。 本地集水從集水區收集而來，大部分集水區均位於受嚴格規管 保護，免受污染的郊野公園內。我們採用多重屏障的原則，在 各集水區監控發展、定期巡查及監測水質的情況，以確保水質 安全。在集水量方面，每年的本地集水量並不穩定，有可能出 現劇烈波動，加上氣候變化的影響，我們預計未來本地集水量 的變動將會更大。 Local Yield Despite the undulating terrain, Hong Kong has developed an extensive rainwater collection and storage system. The local yield is collected in catchment areas, most of which fall within country parks that are well regulated and protected from contamination. We adopt a multiple barrier approach to control development, regularly conduct inspections and monitor water quality in these areas to ensure water safety. In terms of quantity, the local yield is not stable every year, and can be subject to drastic fluctuations. Coupled with the effect of climate change, we foresee even greater fluctuations in the future. 二零一八至二零二二年全年降雨量 Annual Rainfall 2018 – 2022 毫米 millimetres 二零一八至二零二二年全年淨集水量 Annual Net Yield 2018 – 2022 百萬立方米 million m3 年份 Year 400 300 200 100 0 3 500 3 000 2 500 2 000 1 500 1 000 500 0 年份 Year 註：長期平均降雨量為2 431 毫米 Note : Long-term mean rainfall is 2 431 mm 2 395 2 307 2 205 2 396 2 163 2022 2018 2019 2020 2021 2022 2018 2019 2020 2021 272 215 202 288 288 水務署 二零二二至二三年年報 WSD Annual Report 2022/23 20 Scale up 升 級 開 拓
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