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Topography

For the purposes of this report, the geographical coordinates of Portland are 45.523 deg latitude, -122.676 deg longitude, and 36 ft elevation. The topography within 2 miles of Portland contains very significant variations in elevation, with a maximum elevation change of 866 feet and an average elevation above sea level of 161 feet. Within 10 miles also contains very significant variations in elevation (1,253 feet). Within 50 miles contains very significant variations in elevation (11,161 feet). The area within 2 miles of Portland is covered by artificial surfaces (65%), water (19%), and trees (14%), within 10 miles by artificial surfaces (68%) and trees (12%), and within 50 miles by trees (47%) and shrubs (20%).

Data Sources