storm sewer, discharge point, outlet point for rainwater in the estuary in the creek secured with a grid

wall rock garden art tree leaf water autumn flower reflection wood green plant ruins pond iron nature storm sewer discharge point outlet for rainwater estuary creek secured grid rainwater estuary secured grid sewer residential zone slurry water gulli manhole cover road building construction ditch drain drainage leader drain line downpipe drainpipe one-point perspective melt overflow road dale pipe waterspout highway flow rain-water pipe under hydrology work sound weeper down-spout flood culvert tube concrete