metal gratings or rain gutter grid for water on the street to prevent flood and cover drainage sewerage or sewage system hole

background black city clogged concrete cover danger dirty ditch down drain drainage ewalk fender flood flow flowing garbage grate gray grid grille ground gutter hard heavy hole home industry interflow iron lid line maintenance manhole material mesh metal object old pavement pipe plumbing pour prevention public rain raining road roade rock rough round rust rusty sewage sewer simple sink sketching splash spring sprout square steel stone storm street stripe urban water waye weather weathered wet