1) The discharges from separate storm sewer systems in the dry weather do great harm to receiving water in Shanghai.

2) The designed flood peak flow in storm sewer is usually calculated by adopting a constant average runoff coefficient at present in China, simple as it is, it's not reasonable enough.

3) The rainwater id drained into upper water through storm sewer, and the capacity of swage treatment reaches 3,2000 tons.

4) During modifying urban combined sewer into separated sewers, the urban combined sewer can be locally or totally retained as storm sewer on favorable conditions and new wastewater sewer can be built.

5) Based on the non-linear kinematic wave method, a technique using the four point, excentric, implicit, finite-difference numerical scheme to simulate the urban storm sewer system is introduced.

6) Standard Practice for Least Cost (Life Cycle) Analysis of Concrete Culvert, Storm Sewer, and Sanitary Sewer Systems.

7) Optimization of rainwater catchments makes planning and constructing the storm sewer system more efficiently.