Study Area Description

Fig 3 shows the layout of a drainage system of a residential area. There are three subcatchments, four storm-water conduits, and four conduit junctions in it. Outlet nodes for subcatchments S-1, S-2 and S-3 are J-1, J-4 and J-5 respectively. After collection of stormwater from the system, water is finally drained to a stream at outfall O-1. The nearest and representative precipitation measuring gage for the system is RG-1.

Table 1 shows physical information summary of the drainage system of the study area, the data inventory of the physical elements of the system. This information are processed using GIS. More detailed network information is available in the object shape files as listed in the following section.

Table 1: Physical information summary