Water systems evolve through time, changing constantly due to physical pressures or as a result of how we manage them. Changing socio-economic conditions drastically increase the uncertainty associated with such changes, particularly with regards to the outcome of water resources management decisions. There is an increasing need for such uncertainties to be recognised and addressed by more adap...

The scientific sound definition of measures to achieve the goals of the EU water framework directive (WFD) acquires spatially distributed analyses of the water and substance dynamics in mesoto macro-scale catchments. For this purpose, modelling tools or systems are needed which are robust and fast enough to be applied on such scales, but which are also able to simulate the impact of changes on ...

In order to determine the influence of climate and hydrology on water quality of the lower Mekong River, the long term monitoring data (from 1985 to 2004) of climatic, hydrological and water quality variables were analyzed. In general, water quality was 'good' or 'very good' for most of the investigated water quality parameters including DO, pH, conductivity, nitrate, phosphate and total phosph...

Digital Elevation Models (DEMs) are the digital representation of natural topographic as well as man-made features located on the surface of the earth. For the last few decades, DEMs are widely used for resource management, urban planning, transportation planning, earth sciences, environmental assessments, and Geographic Information System (GIS) applications. The hydrologic community is also mo...

For about two decades remote sensing (RS) data in the form of multi-spectral air photography, ground based weather radar as well as geostationary and polar orbiting satellite data have been available for use in hydrology. It is the intention of this paper to advocate the use of RS data in the field of hydrological modelling. It is shown that the main field of application of RS data in hydrologi...

Risk-based management of environmental systems, like rivers, lakes, groundwater aquifers and coastal areas, is a very useful approach for combating specific problems, like water pollution and loss of ecosystems biodiversity. Uncertainties that could be inherent to natural variabilities in space and time, such as those due to hydrological and climatic variations, together with uncertainties rela...

In the future, the frequency and the intensity of cyanobacteria blooms in urban lakes are expected to increase in response to climate change and expanding urbanization. In order to study the impacts of watershed changes on cyanobacteria dynamics in urban lakes, a modelling approach, in which an ecological lake model is connected to a hydrological watershed model, is proposed. To validate this a...

This paper presents a model of a heavily managed coastal Mediterranean wetland. The hydrosystem studied , called “Ile de Camargue”, is the central part of the Rhone river delta. It comprises flat agricultural drainage basins, marshes, and shallow brackish lagoons whose connection to the sea is managed. This hydrosystem is subject to strong natural hydrological variability due to the combination...

The hydrological response due to potential CO,~forced climate change in the Black Hills of South Dakota was investigated using modelling techniques that include variations to atmospheric CO,, temperature, and precipitation. The Soil and Water Assessment Tool (SWAT) was used to model the 427 km Spring Creek basin hydrology and simulate the impact of potential climate change. As expected, modelli...

Realistic estimates of daily streamflow and water temperature are required for effective management of water resources (e.g. for electricity and drinking water production) and freshwater ecosystems. Although hydrological and process-based water temperature modelling approaches have been successfully applied to small catchments and short time periods, much less work has been done at large spatia...