This is untrue. You aren’t thinking about the effects of sediment, usage, and erosion. When you build a dam and allow the riverbeds to dry, it changes the entire water table of the region.
They don't dry; they resume as normal once the dam is complete.
I don't understand that nobody can see this. The lake can't hold all the water to inifinity. Once it's full, the outflow becomes normal. Except now you can regulate it.
I don't understand that nobody can see this. The lake can't hold all the water to inifinity. Once it's full, the outflow becomes normal. Except now you can regulate it.