The occurrence of extreme events can challenge the capacity of water utilities to deliver potable water of sufficient quality with respect to minimising health risks to consumers. As a consequence, proactive risk-assessment and decision support tools are necessary to assist in managing and mitigating such critical events effectively. However, the utility of these tools can be limited due to the...

This paper presents an overview of the development of water quality objectives (water quality guidelines for local waterways), and water quality targets to protect waterways draining to the Great Barrier Reef (GBR). The Great Barrier Reef World Heritage Area is the world’s largest World Heritage Area, and contains the largest single collection of coral reefs in the world, supporting many divers...

Wastewater treatment plants (WWTP) typically have a service life of several decades. During this service life, external factors, such as changes in the effluent standards or the loading of the WWTP may change, requiring WWTP performance to be optimized. WWTP modelling is widely accepted as a means to assess and optimize WWTP performance. One of the challenges for WWTP modelling remains the pred...

Storm water overflow from the combined sewer system might result in a sudden devastating impact to the local ecosystem in an urban river environment. In order to assess overflow pollution load during tropical rainfall, a web-based share vision modelling system is organized and designed in this study to investigate the resultant water quality impacts from both spatial and temporal aspects simult...

An attempt has been made in this present work, to study the seasonal variations of water quality of River Godavari for the period of 2004-2012 at Rajahmundry and Dhawaleswaram located on the banks of River Godavari in Andhra Pradesh. This water quality modelling is done with the help of Water Quality Indices (WQI) computed using NSFWQI and WAIWQI methods. Multivariate statistical techniques nam...

Contents 1. Introduction 1.1. Dynamical water quality models 1.2. Types of dynamical water quality models 1.3. Levels of model complexity 1.4. Representation of spatial structure 2. Overview of water quality models for the catchment scale 3. Ecohydrological model SWIM – a short description 4. Selected SWIM applications in the Elbe basin 4.1. Case study basin and subbasins 4.2. Model calibration...

Hydrological modelling plays a crucial role in the planning and management of water resources, most especially in water stressed regions where the need to effectively manage the available water resources is of critical importance. However, due to the complex, nonlinear and dynamic behaviour of hydro-climatic interactions, achieving reliable modelling of water resource systems and accurate proje...