I thought I would share with you guys a clogged drain problem that I can almost laugh about now.
The "drain" was the french drain around my house. We discovered it was clogged and called Roto Rooter. They tried their normal power snake with no success. They then suggested the camera treatement at a cost of $200 or so. That came up with no addiitional insight. Next we tried their $400 pump truck that can handle just about anything. No dice.
Eventually we brought in a backhoe and dug down 13 feet deep for the front of my house including tearing down the stoop and digging down there too by hand. We found that the french drain was full of concrete. The house has a poured concrete foundation including the stoop and the pipe for the french drain was routed thru the forms for the stoop without a sleave. So when the stoop was poured it went into the perforated pipe going thru the forms and voila a french drain filled with concrete.