indicates that many lakes are encroached for construction of illegal structures up to
54 % while 66 % of lakes are sewage fed, 14 % surrounded by slums, 72 % show
loss of catchment area. Several of the lake catchments are dumped with solid waste
and debris. The encroachments by construction of multistoreyed buildings in lake
beds intervened with the natural catchment flow leading to sharp decline in the
catchment yield and deteriorating quality of water bodies.
2.1 Development Characteristic Over Bengaluru
with the Erstwhile City Corporation Limits, Greater
Bengaluru Region and Bengaluru Metropolitan Area
Table 1 Decline in water bodies of Bengaluru City
Bengaluru city
Greater Bengaluru
Year
Number of water bodies
Area (in ha)
Number of water bodies
Area (in ha)
SoI
58
406
207
2342
1973
51
321
159
2003
1992
38
207
147
1582
2002
25
135
107
1083
2007
17
87
93
918
Source Survey of India, topographic maps (published in 1973), Ramachandra and Uttam Kumar
2009
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