… recharge mapping at the landscape scale described. Current developments in both recharge assessment, and groundwater flow modelling in Australia are described, and the use of these models in underpinning state salinity strategic planning discussed. The salinity management ‘toolkit’ is discussed. The progression from i …
… one after all free NAPL has drained. Residual NAPL is very important because it is a long-term source for groundwater contamination. Recent laboratory experiments have demonstrated that current models for predicting subsurface NAPL behavior are inadequate because they do not correctly predict residual NAPL. The main re …
Seepage analysis is used to investigate the location dependence of fresh-water inputs and outputs in maintaining the depth of the fresh water over the saline water intruding from the sea in coastal aquifers in steady state conditions. Examples are given that show that maximum depths occur when the inputs are in the vic …
… recent years. Declining rainfall and high evapotranspiration rates in the semi-arid region lead to lower flow in the Drâa River. Aggravating this situation, farmers increasingly pump groundwater with motor pumps, leading to a rapidly drop in the aquifer. However, agricultural production is economically inefficient and …
… out an envelope in sandy soils. A separate experiment was conducted to compare the characteristics of the flow from the porous tubes with the specifications given by the manufacturer. The results of the experiment showed that porous tubes do not work efficiently either under low pressure (below 80 kPa) or very high pre …
… is the region through which water, together with pollutant carried by the water, infiltrates to reach the groundwater. Therefore, various processes occurring within the unsaturated zone play a major role in determining both the quality and quantity of water recharging into the groundwater. Classical methods of predicti …