Name of the River
|
Vellar
|
Place
|
Parangipettai
|
District
|
Cuddalore
|
State
|
Tamil Nadu
|
Latitude
|
11° 29’N
|
Longtitude
|
79° 46’E
|
Important Land Marks
|
Centre of Advanced Study in Marine Biology
|
Length
|
16 km
|
Width
|
600 m
|
Average Depth
|
2.5 m
|
Tidal amplitude
|
1 m
|
Nature of the Substratum
|
Sandy-Muddy
|
pH
|
8.2
|
Type of the Estuary
|
Bar-built
|
Water Temperature
|
31.2°C
|
Salinity
|
28.13 ppt
|
Dissolved oxygen
|
4.5 ml/l
|
Predominant benthic fauna
|
Polychaete, Tanaids, Bivalves, Gastropods, Nematodes
|
Predominant phytoplankton
|
Coscinodiscus centralis, Planktoniella sol, Bellerochea malleus, Odontella sinensis, Thalassiothrix frauenfeldii, Thallassionema nitzschiodes, Ceratium furca, Trichodesimium erythraeum
|
Predominant Zooplankton
|
Cyclopoid nauplii, Polychaete, Larvae, Molluscan Veligens
|
Commercially important shellfishes
|
Meretrix casta
|
Commercially important Finfishes
|
Mugil cephalus, Etroplus suratensis, Chanos chanos
|
Sewage dishcharges
|
Local Panchayat Sewage
|
Municipal solid waste dumping
|
Local Panchayat Solid Waste
|