With the development of urbanization

the urban impervious area has increased rapidly

leading to serious rainwater problems such as the increased risk of urban flooding and runoff pollution. Meanwhile

there has also been severe impact on water safety and water environment at watershed scale. Therefore

the urban stormwater management model based on watershed management has developed rapidly in recent years. By analyzing the changes in the peak flow rate and the pollution load of the stormwater runoff before and after the development of the urban land

a management and control method for sponge city construction was put forward at basin scale

which was constrained by the peak flow rate of the flooding way and the self-purification capacity of the water environment. A multi-level stormwater control approach was put forward based on water quantity and quality control

and the stormwater management model of land sustainable development was proposed at the watershed-urban scale. Taking a development area as an example

the construction approaches of regional total runoff volume control

peak flow rate reduction

and runoff pollution control were analyzed

aiming at providing support for the overall coordination of watershed management and sponge city construction in the future.