天气预报 > 教育 > 西湖是人工湖吗
西湖是人工湖吗
更新时间: 2021-04-02 17:38:57  

1、西湖是是天然湖。

2、曾经的杭州西湖,完全是一个死水湖,与周围不通。进入现代,为了改善西湖的水质,国家开始建设引水工程,从钱塘江引水进湖,换出来的水流入运河,按其进水流量,西湖的水大约一个月更新一次。西湖水终于由死水变成了活水。

关键词: 西湖 人工湖

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