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1-Remote sensing/ landsat image.
2-Regional geological mapping.
3-Detail geological mapping.
4-Geophysical methods / electrical.
5-Bore holes drilling.
1- by electerical geophyscal method
2- during the deep boreholes &the subsurface investigations
Groundwater exploration goes through stage
the stage of the preliminary research. (Regional exploration)
The study is conducted to form an idea of the geological and hydrological conditions of the region and is based on the collection and study of any previous studies of the region and the topographical, geological, geomorphological, geological, geophysical, climatic and surface water conditions.
the stage of preliminary studies. (Semi-detailed research of areas of water importance)
Field and laboratory studies accompanied by drilling a few wells or medium-depth with the procedure of pumping near to know the geological composition and the work of chemical analysis of water and these studies conclude the mapping of hydrographic scale scale 1: 100000 or 1: 200000 and sometimes the measurement of 1: 500000 That every 1 centimeter on the map represents 500,000 km (half a kilometer) on the ground.
Detailed studies stage.
Are conducted for limited spaces proved important in preliminary studies. In which the number of studies and experiments is increased according to the purpose of the study and the nature of the area. The study results in 1/50000, 1: 25000, 1: 10000 or 1: 5000 maps of hieroglyphics, depending on the amount of studies carried out.
Hydrographic maps determine the extension, depth, thickness, and properties of the water-bearing class and their hydrographic conditions and their production, as well as the water level of the water surface or the level of the water surface, as well as the quality of the groundwater. Also, the surface water deposits of rivers, nahirat, canal, Lakes affect the feeding of groundwater.
