You are seeing it right Brandi. An overlapping culvert, or an extension, or pull the culvert up 2' is the only way it would work. I'm waiting for the water level to stabilize before I decide which way to go. I will also have to take in to account the added weight and if that will push the inside culvert further down. However, the second culvert is 42" so a 48" would rest on the rock. But if the water is overflowing out of the inner culvert, I'll want to utilize it for a feature. Hmmmmm..... I'll have to take phase II slowly.