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首页> 外文期刊>The international journal on hydropower & dams >Moroccan experience in water resources development and dam construction
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Moroccan experience in water resources development and dam construction

机译：摩洛哥在水资源开发和大坝建设方面的经验

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摘要

Rainfall in Morocco is erratic in both space and time; sometimes years of heavy rainfall are followed by protracted periods of severe drought. Annual rains are heaviest in the northwest (2000 mm), but rarely exceed 200 mm in the southern Atlantic areas, or 50 mm in the Sahara. Total annual rainfall nationwide averages 140 x 10~9m~3, and ranges from 50 to 250 x 10~9m~3. Surface runoff averages an estimated 18 x 10~9m~3/year, varying from 5 to 47 x 10~9m~3. Most of the runoff comes from brief and intense floods, and is unevenly distributed, with 51 per cent of the surface water resources produced in only 7 per cent of the Kingdom. During the past decades, climate change has had a considerable impact on Morocco, resulting in less rainfall and repeated incidences of extreme meteorological phenomena such as drought and floods.
机译：摩洛哥的降雨在时间和空间上都是不稳定的。有时数年的强降雨之后会出现长时间的严重干旱。西北地区的年降雨量最大（2000毫米），但大西洋南部地区的年降雨量很少超过200毫米，撒哈拉地区的年降雨量很少超过50毫米。全国年平均降雨量为140 x 10〜9m〜3，范围为50至250 x 10〜9m〜3。地表径流平均每年估计为18 x 10〜9m〜3 /年，从5到47 x 10〜9m〜3不等。大部分径流来自短暂而强烈的洪水，分布不均，仅王国的7％就产生了51％的地表水资源。在过去的几十年中，气候变化对摩洛哥产生了相当大的影响，导致降雨减少，干旱和洪水等极端气象现象屡屡发生。

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