Review of existing Drainage System
Existing Drains
- Collection and review of existing information as available with the nodal agencies;
- Identification of areas/zones where storm drainage system is cross-connected with the sewerage system;
- Identification of other local conditions that may impact the ability of the storm drainage system to avoid flooding;
- Field investigations to verify existing storm drainage system, typical cross-sections of storm water channels, roadside drains and culverts.
Input Requirement |
Data Source |
Remarks/Design criteria |
| The survey of existing drainage system with their width, depth, length and slopes. | Municipality, Department responsible for O&M and construction of drainage system, local population and site investigation |
Flood Prone Areas
Full description of flood prone areas, including depth of floods, their frequency, number of hours the area is flooded within a particular time period, history of past floods
Input Requirement |
Data Source |
Remarks/Design criteria |
Municipality, Department responsible for O&M and construction of drainage system, local population |