Originally Posted by joecaption
Go back and add your location to your profile.
Just go to Quick links to edit.
Pop ups are not going to work if you live in an area where it freezes.
Use soild PVC and run it to day light.
Here they use pop-ups. The problem lies, when the lines do not fully drain out and you end up with a Ice damn at the top, where the air gap is between the underground line & downspout. Probably would be better to use a dry well for the downspouts, or use rain barrels, so that they can recycle the water for plants, not just let it drain out to the yard.
As for the moving of the one downspout, that can cause problems, especially if the gutters are undersized for their roof to begin with.
To the OP, post the depth & width of your gutters, and the size of the downspouts that you have in place, along with pictures, and measurements of the length of runs for the gutters, placement of the patio, size of the patio.