Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial TechnologiesAn efficient water management, not only allows significant savings in costs of irrigation,
but also an effective control on the quality of products, which can have obvious
consequences on income operation and reducing the environmental impact of irrigation.
As the Internet is becoming the easiest way of information distribution, irrigation
management system can also be benefitted with it. Integrating GIS functionality with
internet capacity will redefine the way of decision making, sharing and processing of
information. In irrigation systems weather plays an imperative role in decision making,
implementing and forecasting. Temperature, humidity, precipitation, and solar radiation
are the most important parameters to calculate evapotranspiration by which crop water
requirement can be determined.
SAGRA (Sistema Agrometeorológico para a Gestão da Rega no Alentejo) network is
providing information to the farmers through web but still lacks the use of GIS in their
information to decision support system. Irrigation management support system can be
benefitted with the use of Web GIS. In this thesis, web based GIS is designed using
popular open source tools and software. Using data from automatic weather station maps
are produced using Geo-statistical interpolation techniques and published in web map.
These maps can be viewed with popular online maps like Google maps, Microsoft Bing
and Openstreet maps.
Animated weather maps are also created which are useful for visualizing changing
pattern of weather parameters and water requirement over time
