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The Range of Environmental and Social Concerns
Published in Karlheinz Spitz, John Trudinger, Mining and the Environment, 2019
Karlheinz Spitz, John Trudinger
The effects of subsidence include the development of sinkholes or depressions in the land surface that may interrupt surface water drainage patterns; ponds and streams may be drained or channels redirected. Farmland can be affected to the point that cultivation is disrupted; irrigation and drainage systems may be damaged. In developed areas, subsidence has the potential to affect buildings, roads, and flow lines. However in remote areas, increasingly the location of new metalliferous mines, such structural risks are usually absent. Subsidence can contribute to increased infiltration to underground mines, potentially resulting in the flooding of underground openings, increased acid rock drainage, and a need for greater water treatment capacity in instances where mine drainage must be treated. Groundwater flow may be interrupted or accelerated as impermeable strata deform, crack and collapse, flooding mine voids. Impacts to groundwater also include changes in water quality and regional flow patterns (with subsequent impacts on groundwater recharge).
Climate Change Impacts on Groundwater
Published in Mohammad Karamouz, Azadeh Ahmadi, Masih Akhbari, Groundwater Hydrology, 2020
Mohammad Karamouz, Azadeh Ahmadi, Masih Akhbari
The groundwater recharge is a hydrologic process where soil water infiltrates naturally through the water cycle or anthropologically through the artificial groundwater recharge into the zone of saturation water. This process takes place in the vadose zone. Figure 11.5 illustrates the main processes. In deeper confined aquifers, the recharge can occur both laterally and vertically through aquitard leakage in the saturated zone (Gerber and Howard, 2000).
Microparticle facilitated transport of contaminants during artificial groundwater recharge
Published in Jos H. Peters, Artificial Recharge of Groundwater, 2020
Artificial groundwater recharge is a widespread technique to treat surface water for drinking water supply and to increase the quantity of natural groundwater reserves. In general, the recharge of groundwater reservoirs can be enhanced by injection wells, infiltration ponds, slow sand filters or bank-filtration. Pre-treated river water is often used for artificial recharge of groundwater although it does have a higher content of colloidal and suspended particles than groundwater.
Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
Published in Cogent Engineering, 2019
P. Nemaxwi, J.O. Odiyo, R. Makungo
Groundwater recharge is an important process in replenishing groundwater resources. For the past decades, groundwater has continued to become more constrained as a result of increasing population, climate change, water scarcity, deterioration of surface water quality, and poor water service delivery particularly in the semi-arid rural regions. Since surface water is more susceptible to pollution than groundwater, this leaves groundwater as a more potentially reliable water resource. In order to sustain long-term groundwater use, make intelligent groundwater allocation decisions, and develop proper water and environmental management strategies in semi-arid regions, groundwater recharge rate is one of the most important components required.
Comparative analysis of GIS and RS based models for delineation of groundwater potential zone mapping
Published in Geomatics, Natural Hazards and Risk, 2023
Fakhrul Islam, Aqil Tariq, Rufat Guluzade, Na Zhao, Safeer Ullah Shah, Matee Ullah, Mian Luqman Hussain, Muhammad Nasar Ahmad, Abdulrahman Alasmari, Fahad M. Alzuaibr, Ahmad El Askary, Muhammad Aslam
Climatic parameters are influential in controlling the water table from the seasonal perception. Precipitation is a significant climatic factor that affects groundwater recharge. Precipitation is considered a vital parameter for potential groundwater mapping because the probabilities of penetration are more in cases of high rainfall; consequently a chief source of water recharge in the area (da Silva Monteiro et al. 2022). The precipitation of the present study area is computed from Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) of 2010 to 2022 using a ML Algorithm in GEE. The concluding precipitation map was then reclassified into five classes using GIS environment as shown in Figure 3f.
Too much water, not enough water: planning and property rights considerations for linking flood management and groundwater recharge
Published in Water International, 2019
An additional potential benefit of these reconfigured rivers is better groundwater recharge, which would help address existing and projected water shortages. The practice of managed aquifer recharge has had international application for many years, using sources such as recycled wastewater and stormwater runoff to replenish groundwater. A newer practice is MAR with floodwaters on agricultural land. This article goes a step further, considering MAR in urban areas in the reclaimed floodplains being created as part of the urban river reconfigurations described above.