The construction of sponge city mainly includes three parts.
1. Rainwater collection facilities include: green roofs, grass ditches, seepage ditches, road squares and other permeable pavements, biological detention, landscape water bodies, rainwater wetlands and sunken green spaces.
2. Rainwater storage facilities: reservoir, rainwater collection pond, regulating pond, ecological canal, etc.
Rainwater filtration facilities: vegetation buffer zone, initial rainwater flow system, soil infiltration system, etc.