ENVIS Centre, Ministry of Environment & Forest, Govt. of India

Printed Date: Wednesday, August 12, 2020

Thengapattinam estuary

 

Name of the estuary
Thengapattinam estuary
Name of the river
Thamiraparani (Kuzhithuraiar)
Place
Thengapattinam
District
Kanyakumari
State
Tamil Nadu
Latitude
8° 24’N
Longitude
77° 16’E
Type of the estuary
Bar-built
Salinity
0.90–10.0 ppt

 

Physico-chemical parameters

 

Descriptive statistics of physicochemical parameters of water for three seasons

 

 

Sl. No.

 

Parameters

 

 

 

Units

 

 

Post  monsoon

Summer

Southwest monsoon

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

1

Rainfall

mm

82

344

10

232

29

237

2

Atmospheric

Temperature

 

°C

28.3

30.8

29.3

32

29.6

31.1

3

Surface Water

Temperature

 

°C

 

26.2

 

29.1

 

27.6

 

29.8

 

27.7

 

29.8

4

Turbidity

NTU

28

39

2

19

4

18

5

Salinity

0.5

6.5

1

7

2

4.5

6

pH

 

7..2

7..95

7..29

8

7.1

7..9

7

DO

mg/L

4.42

7.46

4.1

6.31

4.5

5.3

8

BOD

mg/L

1.2

3

1.4

3..2

2

3

9

Total

Alkalinity

mg/L

30

56

32

64

36

53

10

Total

Hardness

mg/L

360

1860

580

2650

720

2220

11

Nitrite

mg/L

0.05

0.26

0.07

0.2

0.11

0.68

12

Nitrate

mg/L

2

6.02

2

4

2

6

13

Ammonia

mg/L

0.08

1.07

0.35

1.26

0.5

0.98

14

Phosphate

mg/L

0.15

1.9

0.45

2.8

0.75

0.84

15

Sodium

mg/L

280

1070

420

1120

390

485

16

Potassium

mg/L

24

320

53

96

45

95

 

 

Biological entities

 

Benthic communities

Foraminifera

Elphidium spp.,

Globigrrina

Polychaeta

Ceratonereis costae

Dendronereis estuarine

Heteromastidus spp.,

Prinospio cirrifera

Ostracoda

Cypris spp.,

Cando cypria

Decapoda

Macrobrachium spp.,

Penaeus indicus

Metapenaeus spp.,

Mollusca

Bivalvia

Villorita cyrinoides

Gastropoda

Planorbis spp.,

Nematode

Desmodora spp.,

Oncholaimus oxyuris

Oligochaeta

Autophorus spp.,

Branchidrilus spp.,

Dero spp.,

Tubifex tubifex

Harpactioda

Paramesochra wilsoni

Amphipoda

Corophium triaenonyx

Melita zeylanica

Photis geniculata

P. digitata

Insecta

Chironomous larva

Miscellaneous

Larvae of crustaceans

Crab juveniles

Fish eggs and larva

 

 

References

 

Anitha, G. and Sugirtha P. Kumar, 2013. Seasonal variations in physico-chemical parameters of Thengapattanam estuary, South west coastal zone, Tamilnadu, India. International Journal of Environmental Sciences, 3(4): 1253–1261.

Vasantha, R., L. Prabha Devi and P. Natarajan, 2004a. Benthic fauna of Thengapatnam estuary along southwest coast of India. In: Pandey, B.N., P. Natarajan, N. Arumugam and S. Premjith (eds.), New Horizon of Animal Sciences, 352–359.