根据我国的水资源状况及可持续发展的需要，从水量丰富的长江流域引水北上的南水北调工程是势在必行和可以做到的。南水北调的原则应是：建立节水型社会，以供定需；合理配置，注意挖潜；东线、中线相辅相成，并非有我无他；编制概算实事求是，力戒“上马概算”；局部利益服从整体利益，暂时利益服从长远利益；坚持水资源统一管理，科学调配，有偿使用；西南调水不现实，宜暂缓。

According to the present status of China´ s water resources and the needs of sustainable development, it is imperative and possible to carry out the south-to-north water diversion project, that is to divert water from the Yantze River valley, which has plentiful water resources, upward to the north part of China.

The principle of south-to-north water diversion should be as follows： Establish the sociaty of water-saving, do not supply water according to the “exaggerated needs”； distribute water rationally, and pay attention to tapping the potential; the east and weet water diversion routes are existing side by side and playing a part together, not irreconcilable to each other; make budget estimate in a practical and realistic way, avoiding endless supplementary budgets; the partial and local interests must be subordinated to the interests of the whole, and the temporary interests, subordinated to the long-term enes; implement unified management, scientific allocation and the charginy system for use of water resources; to divert water from the southwest region is not realistic, better to put off.