1In the last decade irrigation districts in the Ebro Valley of Spain have started to use 2 database applications to enhance their management operations. Such applications 3 often put more emphasis on administrative issues than on water management issues. A 4 new irrigation district management software called "Ador" is presented in this paper. 5This database application has been designed to overcome limitations identified in an 6 analysis of the software used in the study area. Ador can be used in irrigation districts

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