Abstract
Reliable estimations of stream flow generated from catchments are required as part of the information sets that help policy makers making reasonable decisions on water planning and management. The characteristics of the streamflow time series that influence water resources system modelling and planning can include the sequencing of flows on daily or longer time steps, spatial or temporal variability of flow, seasonal distribution and characteristics of high and low flow. This is mainly based on agricultural and natural land use. Hydrological modelling of the water supply in the river basin is of great importance in planning and optimization of hydropower plants. Those single plants are often integrated into complex cascades and are a significant part of electrical production depending on the natural inflow. However, in many parts of the world the necessary data are missing. The central question of this study was if is it possible to model the water and discharge regime of a catchment area on the basis of available public data, esp. land use, sources in order to ensure single site evaluation and optimize energy production of hydropower plants.
Highlights
Aquifer storage properties are important for understanding hydraulic response to transient stresses on the groundwater bearing rock units
Specific storage is the fluid released from storage per unit decline in hydraulic head per unit bulk volume under conditions such that there is no strain in two orthogonal directions and the total normal stress in the third orthogonal direction is constant
This assumption is faulty and in this study, it is evident that all rocks predictably have different specific storage due to varying composition, porosity and compressibility
Summary
Aquifer storage properties are important for understanding hydraulic response to transient stresses on the groundwater bearing rock units. Specific storage is the fluid released from storage per unit decline in hydraulic head per unit bulk volume under conditions such that there is no strain in two orthogonal directions and the total normal stress in the third orthogonal direction is constant. This definition applies to general isotropic three dimensional elasticity of any representative elemental rock volume. It is a point property and is independent of the problem domain stress and head boundary conditions [1]. Aquifer specific storage and storativity may vary spatially because of geologic heterogeneity and estimation of these properties allow for quantitative prediction of the hydraulic response of the aquifer to recharge and pumping
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