106
Bhimtal gets slightly warmer during the
summer months. The lake water usually portrays
surface temperature 12.5–28 °C, transparency
123–340 cm, pH 7.0–9.1, DO 9.7–13.4 mg l
−1 ,
NO 3 10–325 μg l
−1
, PO 4 1.0–14.0 μg l
−1 , silicate
201–133 mg l
−1 and conductivity 150–300
μmhos cm
−1
. In Bhimtal, mahseer 59.5 %, common carp 34.8 % and schizothoracines 0.73 % (of
the total catch) were recorded.
Naukuchiatal
Naukuchiatal (Plate 6.17 ), lying at 1,219 MSL
and at 29° 19′ N, is literally a nine-cornered
lake. It is situated c 26 km from Nainital and
4 km from Bhimtal. Its maximum length,
breadth, depth, surface area and shoreline length
are 950.9 m, 692 m, 40.8 m, 44.5 ha and
3.506 km, respectively. It is one of the deepest
lakes in the Nainital area. The lake is ideal for
fi shing and watching migratory birds. It is, probably, less eutrophic than some of the other HA
lakes of UKh. The lake usually portrays water
transparency 210–480 cm, surface temperature
12.5–28 °C, pH 6.9–8.5 DO 9.0–21.4 mg l
−1 , Ca
10–48 mg l
−1 , NO 3 10.0–78.0 μg l
−1 , PO 4 traces
–25.0 μg l
−1 , silicate 70–456 μg l
−1 and conductivity 120–200 μmhos cm
−1 . In Naukuchiatal,
mahseer 45.0 %, common carp 31.5 % and
schizothoracines 0.95 % (of the total catch) were
recorded.
Sat Tal
Sat Tal (Plate 6.18 ), lying at 1,286 m MSL and
at 29° 29′ N, is a signifi cant lake in Nainital
District of Uttarakhand, situated at a distance
of 22 km from Nainital. It is a complex of
seven interconnected lakes (hence the name
‘Sat Tal’; ‘Sat’ = seven), namely, Panna or
Garud Tal, Nal Damyanti Tal, Purna Tal, Sita
Tal, Ram Tal, Laxman Tal, Sukha Tal or
Khurdariya Tal. The lake is surrounded by
beautiful dense oak forests. Many migratory
birds generally visit this lake.
Sat Tal seems to be little less eutrophic than
some of the other Kumaon lakes. The lake has a
maximum depth of 20 m. It usually shows water
transparency 100–300 cm, surface temperature
14.0–30.0 °C, pH 7.4–8.4, DO 6.2–8.6 mg l
−1 ,
NO 3 0.5–1.0 μg l
−1 , PO 4 240–500 μg l
−1 and
Plate 6.16 Bhimtal Lake
Plate 6.17 Naukuchiatal
Plate 6.18 Sat tal
6 Lakes of the World
Bhimtal gets slightly warmer during the
summer months. The lake water usually portrays
surface temperature 12.5–28 °C, transparency
123–340 cm, pH 7.0–9.1, DO 9.7–13.4 mg l
−1 ,
NO 3 10–325 μg l
−1
, PO 4 1.0–14.0 μg l
−1 , silicate
201–133 mg l
−1 and conductivity 150–300
μmhos cm
−1
. In Bhimtal, mahseer 59.5 %, common carp 34.8 % and schizothoracines 0.73 % (of
the total catch) were recorded.
Naukuchiatal
Naukuchiatal (Plate 6.17 ), lying at 1,219 MSL
and at 29° 19′ N, is literally a nine-cornered
lake. It is situated c 26 km from Nainital and
4 km from Bhimtal. Its maximum length,
breadth, depth, surface area and shoreline length
are 950.9 m, 692 m, 40.8 m, 44.5 ha and
3.506 km, respectively. It is one of the deepest
lakes in the Nainital area. The lake is ideal for
fi shing and watching migratory birds. It is, probably, less eutrophic than some of the other HA
lakes of UKh. The lake usually portrays water
transparency 210–480 cm, surface temperature
12.5–28 °C, pH 6.9–8.5 DO 9.0–21.4 mg l
−1 , Ca
10–48 mg l
−1 , NO 3 10.0–78.0 μg l
−1 , PO 4 traces
–25.0 μg l
−1 , silicate 70–456 μg l
−1 and conductivity 120–200 μmhos cm
−1 . In Naukuchiatal,
mahseer 45.0 %, common carp 31.5 % and
schizothoracines 0.95 % (of the total catch) were
recorded.
Sat Tal
Sat Tal (Plate 6.18 ), lying at 1,286 m MSL and
at 29° 29′ N, is a signifi cant lake in Nainital
District of Uttarakhand, situated at a distance
of 22 km from Nainital. It is a complex of
seven interconnected lakes (hence the name
‘Sat Tal’; ‘Sat’ = seven), namely, Panna or
Garud Tal, Nal Damyanti Tal, Purna Tal, Sita
Tal, Ram Tal, Laxman Tal, Sukha Tal or
Khurdariya Tal. The lake is surrounded by
beautiful dense oak forests. Many migratory
birds generally visit this lake.
Sat Tal seems to be little less eutrophic than
some of the other Kumaon lakes. The lake has a
maximum depth of 20 m. It usually shows water
transparency 100–300 cm, surface temperature
14.0–30.0 °C, pH 7.4–8.4, DO 6.2–8.6 mg l
−1 ,
NO 3 0.5–1.0 μg l
−1 , PO 4 240–500 μg l
−1 and
Plate 6.16 Bhimtal Lake
Plate 6.17 Naukuchiatal
Plate 6.18 Sat tal
6 Lakes of the World