一、引汉是南水北调战略任务的重要组成部分我国西北地区干旱缺水是众所周知的。对于黄淮海平原缺水问题人们曾有不同意见,但现在业已趋于一致,肯定是缺水了。淮河和海河流域地表水量不足,许多地区超采地下水致使地下水位连续下降,形成了很多漏斗的现象已相当严重。1981年国务院采取临时紧急措施从黄河引水解决天津严重缺水的局面,1982年又从山东引黄和岳城水库输水天津,以后还修建了引滦工程以缓和天津缺水的问题。这些都说明了当前北方缺水 I. Introduction of Han is an Important Component of the Strategic Task of South-to-North Water Diversion Drought and water shortage in northwest China is well known. People have different opinions on the water shortage problem in the Huang-Huai-Hai Plain, but now it has become more and more consistent. It is certainly a shortage of water. Surface water in the Huaihe River and Haihe River Basin is not sufficient. In many areas, over-exploitation of groundwater leads to the continuous decline of groundwater table, resulting in quite a lot of funnels. In 1981, the State Council took temporary emergency measures to divert water from the Yellow River to solve the serious water shortage situation in Tianjin. In 1982, it transferred water from Tianjin to the Yellow River and Yuecheng Reservoir to Tianjin. Afterwards, the Luanhe River Diversion Project was also constructed to ease the shortage of water in Tianjin. All these illustrate the current lack of water in the north