Modelling Catchments in Qatar to Assist in Operations
Abstract
Qatar is experiencing unprecedented growth and infrastructure is being developed
at a rapid pace. The infrastructure is served by storm water systems which are under
development and need to be resilient in case of storms. The storm water systems
serving Doha and nearby areas are complex in nature. They include passive, positive
drainage systems and also connect critical locations such as underpasses and a number
of ancillaries. The two main reasons adding to the complexity are asset creation work
ongoing at multiple locations and various temporary and permanent systems operating
simultaneously. A standardized approach for operating this complex storm drainage
network becomes essential. Also, while solving problems such as flooding during
a rainfall event, at times root cause of a problem may be at a different geographical
place than that of the actual location of the problem. It is difficult to arrive at a root
cause without an overall understanding of the system. This along with a standardized
approach is useful in taking better informed decisions before, during and after storm
events. A coordinated effort between Ashghal Design and Operation & Maintenance
Departments resulted into an operational philosophy. Hydraulic modelling supported
by comprehensive GIS information played an important role in developing this. The
work consisted of considering issues encountered during recent major storm events
and simulating multiple scenarios. The recommended actions are currently under
implementation. The next stage will be to set up a near real time operation system which
would include SCADA data linked to and hydraulic models.