The green space is often slightly h

The green space is often slightly higher than the road surface. When the green runoff on both sides converges on the road, the rainwater can be drained along the longitudinal slope of the road network. There are also some road networks that need to be set up with a drainage ditch or open ditch on one side of the road. Generally speaking, only a wider garden road can have the conditions of setting up a drainage ditch, which is generally the main garden road in the park. The rainwater will be discharged into the road network ditch through the cross slope of the road, and into the urban drainage pipeline or the nearby natural water system through the pipeline. Rainwater collection port can be decorated with ornamental materials.