why do we mostly depend on ground water in the Telangana state
Answers
Answer: This may help you
Explanation:
Although, water covers three quarters of the surface of the earth and 97.2 per cent of it is in oceans, but this water is too saline for our use. The distribution of remaining water has been estimated as 2 per cent as ice caps, 0.62 per cent as groundwater, 0.009 per cent as fresh water lakes, 0.8 per cent as salt water lakes, 0.001 per cent as atmospheric water and only 0.0001 per cent as rivers.
A considerable quantity of groundwater occurs at depth not accessible to us. Also, large quantity of groundwater even from an accessible depth may be brackish/saline as in the coastal aquifers. Fresh water in earth is therefore very limited and is getting scarcer by the day. A considerable quantity of fresh water is also being lost due to chemical pollution of irreversible nature. The scarcity no doubt has started affecting the entire population at large but the effect is more pronounced amongst the poorer section of the society.
Of the total water used in our country, nearly 80 per cent is consumed for irrigation, 12 per cent for industrial needs and 8 per cent for domestic use. Presently, more than 60 per cent of irrigation water comes from groundwater. Surface water irrigation projects require large reservoir occupying useful land, subject to evaporation and storage losses and the water needs to be transported a long distance for use through a complex distribution system.
Groundwater, on the contrary occurs more extensively, not subject to open evaporation and is easily accessed and managed by an individual user. Another viable alternative source of collecting fresh water is in situ rainwater harvesting. Rainwater collected from a catchment area is stored in small depressions and surface storage tanks close to the agricultural lands for direct use in irrigation. Rainwater is also harvested from rooftops serving as a “catchment area” particularly in urban areas with moderate to high rainfall and stored in tanks for domestic use. Excess rainwater can be diverted for recharging of groundwater.
because it is the only source of pure water in telangana