Abstract:
Dhaka, the capital city of Bangladesh is
located in the geographic center of the country. Lots of
lakes are situated in this city for balancing the
environmental condition. But at present, almost all lakes
are lost their beauty for various reasons such as
continuous discharge of domestic and industrial
effluents, sediments from under-construction buildings
and liquid sewage through WASA drains etc. It is time
to take initiatives for saving the lakes in Dhaka city. In
this study an attempt was made to determine some vital
water quality parameters of the selected lakes and to
find out the most vulnerable location from Uttara Lake,
Dhanmondi Lake, Banani Lake, Gulshan Lake, Ramna
Lake and Hatirjheel Lake. Also tried to find out the
remedial measures to minimize the pollution of lake
water and create a safe breeding zone for fish. A strong
survey has been done to identify the main reasons
behind the water pollution. From the study it is seen
that, the physiochemical parameters of selected lakes
water are not in suitable condition. Especially Turbidity
and BOD5 are in the worst condition of all the six
selected lakes. The water quality status of Uttara Lake is
in the best position and 68 percent people are satisfied
with the present condition. But the water condition of
Gulshan Lake is in the worst position. Also BOD values
for fisheries are not satisfied with standard range which
is very vital issue for breeding fish properly.
