NJ Highlands CouncilSeverely Constrained Slopes: All lands with slopes of 20% or greater selected from the 2018 LiDAR Derived DEM resampled at 50 x 50 feet.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/85e4b2d0654d40bf8d84d71a06b078d6_1engNew Jersey Geographic Information Network (NJGIN) Open Data PortalPublicSlopes Greater Than 20 Percent [New Jersey]Web servicesNew JerseyLast Modified: 2025-11-17