Framework of Integrated Stormwater Management of Jinan City, China

The fast pace of urbanization puts stress on water resources. There are water shortages in many big cities. At the same time, the increase of impermeable surfaces makes floods more frequent. The conflict of water shortages and flood risk indicates that traditional stormwater management should be changed. Traditional stormwater management routes runoff directly to streams and rivers, exacerbating pollutant inputs and hydrologic disturbances that result in the degradation of ecosystem structure and function. The new stormwater management techniques integrate stormwater collection, treatment, storage and reuse. Integrated management could be implemented on the roads, parking lots, depressed grassland and building roofs. This will reduce the runoff volume released by floods downstream, thereby reducing pollution and improving aquatic function. However, the integrated approach is just starting in many Chinese cities and there are lots of things to do.