06-bioresourcesstatu.. - M. S. Swaminathan Research Foundation

The central sector is moderately deep, 0.7 to
2.8 m. The southern sector is the deepest zone,
1.2 - 3.25 m. The average depth in the channel
is 1.86m. Seasonal variation in depth is seen in
all sectors, minimum with the lower limit but
maximum with the upper limit of the depth.
c. Transparency: The transparency values vary
between 10-86cm in northern sector, 17-125cm
in central and 20-130 cm in northern sector.
d Temperature, pH and salinity: The surface
temperature of the lake varies from 28.4 to 36°C
during summer, 30.5 to 32.4°C and 23.1 to 27.2
°C during fall and winter, respectively. The pH
values vary from 7.6 to 10.2 in the lake. The
maximum and minimum pH were 10.2and 8.3 in
northern, 9.7 and 8.3 in central and 7.6 and 9.1
in southern sectors recorded during three
c '"
~
.0 "
3
"' ,.
.• j
;: "
'"
"
~" ,
;;
;; '"
~ 27
!"- '"
;( 25
,.
1015
1
::1 1000
'"
~,
;; ,
;;
~
E ,
!"-
";; ,
;; ,
;:
8:7'l
l~
>