Description: This dataset includes contour lines derived from a bare-earth Digital Elevation Model (DEM) generated using LiDAR data collected during a 2015 aerial survey conducted by Quantum Spatial (now NV5 Geospatial). The LiDAR flight captured high-resolution (1m) elevation data across the Puget Sound region. The resulting DEM was used to generate topographic contour lines and steep slopes, suitable for a variety of planning, engineering, and environmental applications.