We have got lithological data - depths of clay, sand, gravel and others in meters. How to find out the groundwater table based on this? Well, we have screen positions as well. Does it help?
Lithological data alone will not yield information on the water table/potentiometric surface. You will need to measure the depth to water in wells or piezometers and/or conduct resistivity surveys.
May you can use the electrical resistivity tomography (ERT) to detect the GWT, you can see something from the following paper:Characterizing hydrological processes on loess slopes using electrical resistivity tomography – A case study of the Heifangtai Terrace, Northwest China.
Lithological data alone will not yield information on the water table/potentiometric surface. You will need to measure the depth to water in wells or piezometers and/or conduct resistivity surveys.
Well,
All above mentioned answers are recommended, but If the field measurements of the aquifer can not be carried out, it can be expected to be above the filter if we know that the aquifer is of confined type and the location of the groundwater table within the range of the installed screen if the aquifer is of unconfined type.
Regards
Essentially, depth to water (DW) is required. It can be measured within any well using water sounder. Additionally , the ground surface (GS) elevation at the same well is used to estimate water table level (WT) via formula
WT=GS-DW.
Thats it..
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