aerial map, Portland International Airport, PDX, aerial map, above, Portland, Oregon, aeronautics, air, airfield, airport, aviation, diagonal, field, flight, flying, general, infrastructure, landing, landings, marking, markings, pavement, rubber, runway, runways, terminal, terminals, transport, transportation, travel, traveling, taxiway, city, metro, metropolitan, urban, urbanized, city, drainage, basin, channel, floodplain, flow, flowing, river, riverine, stream, water, watershed, straight down, Wilamette River, Wilamette Valley, Columbia River, satellite, grid, street grid, vertical, aerialarchives, aerials, air, elevated, metro, metropolitan, urban, urbanized, drainage basin, channel, floodplain, flow, flowing, river, riverine, stream, water, watershed, straight down, satellite, vertical, aerialarchives, aerials, air, elevated, America, American, OR, Pacific Northwest, west, western, United, States, US, USA