Ключевые слова: barrier, channel, city, cleanliness, clogged, concrete, cover, drain, drainage, engineering, environment, flow, grate, grating, grid, infrastructure, installation, iron, maintenance, management, metal, outdoor, pathway, pavement, pedestrian, pipe, prevention, protection, public, rainwater, road, roadside, runoff, rust, safety, sanitation, sewer, sidewalk, stormwater, street, surface, system, urban, utility, water, wet,