Studying the impact of construction dewatering discharges to the urban storm drainage network(s) of Doha city using infoworks integrated catchment modeling (ICM)

Abstract

-The discharge of construction dewatering flows to the storm drainage network for disposal is a common activity in Qatar. The Dupuit empirical approach was utilized to establish various hypothetical dewatering scenarios on the basis of site classifications, which were modeled on 4 Case Study Areas of Doha's Existing Surface Drainage Network in order to study the impact of dewatering discharge against an established baseline. The simulations were undertaken using InfoWorks Integrated Catchment Modeling (ICM) software for critical and non-critical rainfall events. The results indicated significant localized flooding in excess of the baseline conditions for scenarios exceeding 0.5 m 3 /sec flows, while individual catchments demonstrated variations and sensitivities on the basis of catchment properties and rainfall events. It is evident that dewatering discharge under unpredictable rainfall events poses various levels of risk to the city's infrastructure, which is further exacerbated due to the massive scale of construction activity in the country and the rising ground water table in Greater Doha Area basin.

High-Resolution Hydrological-Hydraulic Modeling of Urban Floods Using InfoWorks ICM

“…InfoWorks Integrated Catchment Modeling (ICM) is among the flood models that integrate GIS interface to provide a comprehensive range of applications. Due to its pre-and post-processing capacities, InfoWorks ICM is widely used for integrated catchment modeling [18][19][20][21][22][23] and flood hazard and risk mapping studies [24][25][26][27][28]. In recent decades, there has been a growing demand for flood models that have a high reliability to produce as much of a near-real-time flood scenario as possible.…”