The trompe funnel & how much water it allows in would also indicate how much water comes out the other end, stream flow then is negated and controlled variable, and since pumps can go say anywhere from 20 to 80gph with as much as 40' of head pressure using as little as 24watts of Solar energy; my solar panel has over 30watts left over. I can now recapture air, and water energy in addition to solar in this setup.
So I don't see myself converting it into less energy, I see myself converting it into multiple types of energy. It's the permaculture way!!!