Share Email Facebook Twitter LinkedIn Ridge Lines (What's New in 2023.1) Ridge Lines are new objects that represents a linear elevation that directs drainage away from its placement. During optimization, the Ridge Line creates an elevation to repel drainage, unlike the Drain Line object which attracts and directs drainage. Related: Ridge Lines Ridge Line Properties Panel Drain Lines Parent page: What's New in Autodesk Grading Optimization for Civil 3D 2023