Introduction to special section on Uncertainty Assessment in Surface and Subsurface Hydrology: An overview of issues and challenges

This paper introduces the Water Resources Research special section on Uncertainty Assessment in Surface and Subsurface Hydrology. Over the past years, hydrological literature has seen a large increase in the number of papers dealing with uncertainty. In this article, we present an overview of the different sources of uncertainty and the...

Modelling ungauged lowland basins: Does complementary groundwater data add value to topography driven conceptual modelling?

A common practice for hydrologists to determine the performance of a hydrological model and its parameter values, is by calibrating the model parameters on observed discharge data, but this data is not always available. For this reason, other data should be used as complementary data in order to reduce the uncertainty of outflow and processes in...

Observing the hydrology of China from space - detection of anthropogenic changes in hydrology using spaceborne measurements

In this study we focus on the use of remotely sensed data, mainly data from the GRACE mission, for the detection of hydrological changes in China. More specifically, the Hai - Huai - Huang basins and the impoundment of the Three Gorges reservoir are studied. Due to noise and the required filtering of the monthly GRACE gravity field solutions...

Groundwater modelling of the khettara area of Fezna-Jorf-Hannabou, Morocco

This master thesis comprehends a study on khettaras, historical subsurface drainage tunnels, in East Morocco. A numerical groundwater model was set up to simulate these systems and to get a better understanding of their behaviour. Subsequently, the model was used to simulate the effect of several scenarios: increased use of pumped wells in the...

Continuing Lines: Application of heuristic optimisation techniques for spatial environmental problems with multiple objectives

Resource management in densely populated and technologically developed countries is faced with changing conditions, tending towards increased complexity. Some examples of these trends are: * increasing scarcity of resources and hence increased need for efficient production; * increasing number of objectives, such as those referring to ecological...