With the economic development in the irrigation districts, water use conflicts have become more and more urgent,
especially in the arid and semi-arid region. Water allocation of large-scale irrigation is a complex problem which should
be economically efficient and environmentally considerable as well as socially fair, and has received considerable
attention these years. However, these objectives are in conflict with one another in their spatial locations. The integration
of spatial multi-objective analysis with GIS has a good potential in solving the spatial multi-objective problems. In this
study, a spatial framework was formulated to integrate various spatial data and attribute data, based on which, water
allocation model was developed according to the water system's characteristics and finally a user interface was
developed to couple models and GIS.
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