Ключевые слова: abundant, america, beautiful, bridge, cascade, clean, closed, columbia, creek, damaged, danger, falls, flow, formations, gorge, landscape, mist, moss, multnomah, natural, nature, north, oregon, outdoor, pacific, parks, peaceful, plant, portland, potable, public, relaxing, resource, river, rock, rocks, rushing, safety, scene, scenery, season, serene, sound, spring, springtime, state, stream, tall, tranquil, travel, vegetation, vibrant, view, water, west, white,