[denniskathyb]

Down Spouts:
My house was built in 2004, I bought it in 2008. The down spouts connect to pipe that goes under ground then reemerges out in the lawn where the water is expelled. During heavy rain the pipe (which is connected to down spout) is unable to handle the amount of water and the water backs up and comes out of the down spout at the connection to the pipe.

Question:

Assuming the pipe is partially plugged, can one clean it out with a wet-dry vac?

Should I just forget the underground connection and extend my down spout to dump onto the driveway?

Is what is going on normal, practical, and I should leave it alone?