TYPES OF DATA AVAILABLE IN DATA CENTRE

1. Rainfall Data – Yearly, Monthly, Daily, Hourly
2. Meteorological Data
1. Maximum, Minimum temperature - Daily
2. Temperatures -Hourly
3. Relative Humidity
4. Sunshine hours- Hourly
5. Wind direction
6. Wind velocity
7. Evaporation
8. Soil moisture content
9. Atmospheric pressure
10. Evapo Transpiration
3. Hydrologic Data (Discharge at various points of the river) –

                      Gauge & Discharge at Selected sites throughout Tamilnadu

4. Ground Water Level data
1. Water level of Shallow Aquifers
2. Water Level of Deep Aquifers
5. Water Quality for GW & SW
6. Geological Data- Lithologs
7. Sea water Intrusion data
8. Well Census Data – Database of 37 lakh wells throughout Tamilnadu as on 2004

Different Instruments used for SW Data Measurement

Standard Rain Gauges (SRG)

Autographic Rain Gauges(ARG)

Fully Climatic Stations(FCS)

•         Thermometers- Dry, Wet, Maximum, Minimum

•         Thermograph

•         Hygrograph

•         Sunshine Recorder

•         Wind vane

•         Anemometer

•         Pan Evaporimeter

•         Soil Moisture Content       Optional in FCS

•         Barometer

Automatic Weather Station(AWS)

Digital Water Level Recorder(DWLR)

Instruments for Flow Measurement

•            Current meter  

Hydrology Project II

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