Ключевые слова: asphalt, canal, cement, concrete, construction, design, ditch, drain, drainage, dry, edge, effluent, engineering, footpath, grass, green, grid, gutter, kerb, kerbside, kerbstone, landscape, lawn, marking, markup, nature, nobody, outdoors, park, pathway, rainwater, road, roadside, runoff, sewage, sewer, sidewalk, slab, stone, storm, stormwater, surface, tarmac, walk, waste, wastewater, water, waterway, way,