Central Water Commission

Hydrological Observation Judisdiction of CSRO

The river basins under this Organisation for the works Hydro-meteorological observation are as given below:

1. Cauvery Basin from Biligundulu site and downstream
2. Pennar Basin
3. West flowing Rivers below Tadri to Kanyakumari
4. East flowing rivers between Pennar and Kanyakumari

Hydrological Observation Judisdiction Map of CSRO

Hydrological Observation Stations Under CSRO

Division-wise and basin-wise hydrological observation stations under CSRO as on 01.09.2019 are given in the tables below:

1. Division-Wise Details of Hydrological Observation Stations under CSRO

   Sl. No
   Name of the Division
   No of HO sites upto XI Plan period
   No. of HO sites opened during and after XII plan period
   Category wise number of sites
   Total No. of HO sites

    
   G
   GD
   GDQ
   GDSQ
    

   1
   Southern Rivers Division, Coimbatore
   23
   13
   0
   6
   10
   20
   36

   2
   South Western Rivers Division, Kochi
   28
   22
   0
   16
   9
   25
   50

   3
   Hydrology Division, Chennai
   24
   20
   0
   20
   16
   8
   44

    
   Total
   75
   55
   0
   42
   35
   53
   130

    

2. Basin-Wise Details of Hydrological Observation Stations under CSRO

   Sl. No
   Name of the River Basin
   Name of the Division
   Total HO sites

    
   SRD
   SWRD
   HD
    

   1
   Cauvery
   23
   0
   7
   30

   2
   Pennar
   0
   0
   12
   12

   3
   West flowing Rivers below Tadri to Kanyakumari
   1
   50
   0
   51

   4
   East flowing Rivers between Pennar and Kanyakumari
   12
   0
   25
   37

    
   Total
   36
   50
   44
   130

    

3. Basin & State-Wise Details of Hydrological Observation Stations under CSRO

   Sl. No
   River/ Basin
   State
   G
   GD
   GDQ
   GDSQ
   Total

   1
   Cauvery
   Karnataka
   0
   0
   0
   1
   1

   Tamil Nadu
   0
   2
   10
   14
   26

   UT of Puducherry
   0
   0
   2
   0
   2

   Kerala
   0
   1
   0
   0
   1

   2
   Pennar
   Andhra Pradesh
   0
   4
   3
   4
   11

   Karnataka
   0
   0
   1
   0
   1

   3
   West flowing Rivers below Tadri to Kanyakumari
   Karnataka
   0
   1
   6
   1
   8

   Kerala
   0
   8
   7
   23
   38

   Tamil Nadu
   0
   2
   2
   1
   5

   4
   East flowing Rivers between Pennar and Kanyakumari
   Andhra Pradesh
   0
   0
   0
   2
   2

   Tamil Nadu
   0
   19
   8
   7
   34

   UT of Puducherry
   0
   0
   1
   0
   1

    
   Total
   0
   37
   40
   53
   130

(G – Gauge, GD – Gauge and Discharge, GDQ - Gauge, Discharge and Water quality, GDSQ - Gauge, Discharge, Sediment and Water quality)