Well, in underground systems there are natural discharge points—places where the water flows out of the underground systems, out to lakes and streams.

在地下体系中有自然的排放点——那些水从地下体系流出进入湖泊和溪流的地方。

Well, a drop in the water level can mean those discharge points will eventually dry up. That means water's not getting to lakes and streams that depend on it.

水位下降意味着那些排放点最终会枯竭。从而水不会到达那些依赖着它的湖泊和溪流。

You know, in the state of Arizona we're managing some major water supplies with this principle of safe yield, under a method that will eventually dry up the natural discharge points of those aquifer systems.

在亚利桑那州，我们正用安全产水量管理着一些主要的水供应，用一个终将使那些含水层体系里的排放点枯竭的方法。