How reliable are these LIDAR scans? They seem pretty speculative to me and the way they label features doesn't always make sense. Like page 10 of the PDF has

How reliable are these LIDAR scans? They seem pretty speculative to me and the way they label features doesn't always make sense. Like page 10 of the PDF has a causeway intersecting with a canal and merging. That doesn't seem likely or possible given what I know about canals and roads.