Deep Aquifers

Hydro-fracturing is a new approach to revitalise bore wells to improve its yield, by injecting water at high pressure in the failed bore wells to break up fissures, clean away mud and other impurities, thus bringing it in contact with adjacent water bearing bodies, and thereby yield water.

A concise explaination of the techniques used for groundwater exploration.Electrical well logging is a kind of geophysical logging tool for ground water exploration. It involves the continuous recording of electrical resistance, resistivity and spontaneous potential (SP) of formations of a drilled bore hole. This helps to identify the formations and also delineate freshwater aquifers from saline aquifers.It is also used to delineate the fracture system in hard-rock terrain, for rejuvenation of poor/low-yielding bore wells.

WE have a farm in Bangalore North, Hennur Road, with a number of borewells that have been unsuccesful or dried up. About 5 years back we built a dam across a Nalla (Natural erosion)in the farm, to collect rain water. The size of the Nalla is 300x20 ft approx with a water depth of over 7ft in good rainfall time. This year for the first time, thank God, it has not dried up.

This set of maps, give a picture of the groundwater situation in Abdasa taluka of Kutch District, Gujarat

Arsenic contamination of irrigation water, soil and crops in Bangladesh: Risk implications for sustainable agriculture and food safety in Asia.

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The aim of this report is to highlight the quality problems encountered in the groundwater in the state. The chemical parameters which are present in groundwater in excess of the prescribed norms and which are considered harmful beyond permissible limits are discussed in detail.

The study collected 918 samples from 735 locations across an area of 400 square kilometers of the city and its environs. The samples were collected in March and April of 2003. Testing was done for 25 parameters. The results indicate that -

The Sachetana Drinking Water project of the Government of Karnataka covers 15 villages in each of the taluks of Bagepalli (Chikkaballapur), Mundargi (Gadag), Sira (Tumkur) and Pavagada (Tumkur).

The baseline survey covers a representative portion of the villages and families of the above and contains the following information:

This report from the Central Ground Water Board (CGWB) deals with the status of groundwater in the Wardha district of Maharashtra.

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This papers models the saline water intrusion in the Bardez taluk of Goa.

The study is replete with hydrogeological maps and data. These include topographic contours, soil, landuse, rainfall, geology, location of observation wells etc.