20210304 08484200 1.0 TRUE Steep Slopes (20% or more) <DIV STYLE="text-align:Left;font-size:12pt"><DIV><P><SPAN>Polygons representing slopes greater than or equal to 20% in the Portland Bureau of Environmental Services topographic watershed boundary area. Derived from 2014, reclassified, 1' resolution LiDAR bare-earth digital elevation model (DEM). All slopes average over a horizontal distance of 15'. Minimum area of contiguous slope is approximately 1/2 acre. Polygons were created, generalized and smoothed in ArcGIS 10.3.1 and ArcGIS Pro.</SPAN></P></DIV></DIV> Bureau of Environmental Services