Under World Bank Aided Hydrological Project, in each state and for the central agencies, Hydrological Information Systems are being developed.  Hydrological Information Systems comprises of physical infrastructure and human resources to collect, process, store and disseminate data on hydrological, geo-hydrological and hydro-meteorological variables.

To assess water resources in Karnataka State in a scientific manner, the flow data at various points in different river basins and rainfall data are most essential.  As such, the Government of Karnataka has established a separate Hydrology Unit under Water Resources Development Organization , with the responsibility to collect data from various gauging station spread all over the state for analyzing and validation of Hydrometric and Hydro meteorological data.

The Hydrological Information Systems in Karnataka consists of:

  1. Hydrological Stations:
  2. Current Meter Gauging Stations                             -                       32
  3. Stage Discharge Stations                                        -                       10
  4. Silt and Sedimentation observations Stations         -                       22
  5. Hydro Meteorological Stations:   
  6. Fully Climatic Stations                                            -                       87
  7. Autographic Rain Gauge Stations                           -                      173
  8. Standard Rain Gauge Stations                                -                      757

The data obtained from these Hydrological and Hydro meteorological stations are scrutinized, analyzed and processed.

The real time data transfer system has been established for transfer of Rainfall Data from all 1010 rain gauge stations through SMS using GSM technology to the central server located at Bangalore.

Weather data from 21 Automatic Weather Stations is received every 30 minutes and data transmitted via GSM/GPRS technology and is available on the website.

The flow data from different rivers leading to major reservoirs is being measured through ADCP and Radar level sensors which will help in assessing the inflows into major reservoirs in real time.

In addition, Radar level sensors  are installed  to measure the water level at 16 reservoirs across the state