there is a spring that is basically at the bottom of my driveway ,coming out of s stone wall , that section where the water comes out of the over flow from the spring is where it runs into a catch basin then into the now clogged pipe , when i moved here 30+ years ago it flowed fine never had any problems with flooding , being it's now clogged and possibly crushed in sections it needs replaced...I can't dig by hand anymore being I'm 68 and my back isn't in great shape ..I have to get a local contractor to at least dig up the old pipe and I'm not sure how deep it really is, my guess is maybe 2 feet but not 100% sure. sorry but I have no way to post pictures. The contractor is coming next week so I guess I'll leave it up to him as to the best thing to do...