Chairman: Dr. jack Vallentyne & Dr. T. V. RamaChandra
are critical “storage tanks” of freshwater. The chief sources of water for
the lakes are rainfall, and ground water table. Lakes and their surrounding
watersheds are unique and valuable for the functioning of ecosystem.
In most cases, the presence of lakes helps as a source of drinking water,
agricultural usage, etc. More than 90% of all available freshwater on land are
contained in lakes and reservoirs.
It has been a practice to construct barriers (tanks) to store the
rainwater and then utilize it later judiciously.
paper addresses the concerns of encroachment of lakes, its effect on the
ecosystem and the necessary steps required to check this. A case study on such
encroachment at Gubbi, Tumkur district is presented. In Gubbi town a tank called
Maranakatte was gradually encroached by public as well as the local government
authorities owing to increased pressures on availability of land to cater the
growing population. The paper discusses the events that lead to the
disappearance of the tank and the long-term implications of the activity, which
is already hitting hard on the public and the general ecosystem. Today the
ground water table at Gubbi is about 25 meters from 8 meters 35 years ago and
the entire population of Gubbi faces a severe drinking and domestic water
shortage. The shortage in water supply and receding ground water table is
attributed to the loss of a storage tank inside the town, which was earlier
catering to the water supply of the town as well aided in the recharge of ground
the consequences of encroachment of lakes disturbing the natural ecosystem are
many places due to the increase in population lakes are converted as usable
severely affects the natural ecosystem. Appropriate measures required to check
such activities are outlined. Awareness and knowledge on the implications of
these activities are felt very essential in this regard. Efforts made to promote
and propagate water-harvesting techniques for better and sustainable water
management practices are suggested.
IX Standard, Vidyaniketan High School,
Tumkur. Karnataka India
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