The basin level water balance analysis is the core of water resource evaluation and rational management.A method of basin level water consumption balance is presented in this paper

based on evapotranspiration estimated by remote sensing and combining statistic data.In a case study

we analyzed the water consumption balance in the Hai Basin from 2002 to 2007 and found the average water storage change to be-6.23 billion cubic meters.The agriculture sector is one of the biggest consumers of water resources

accounting for 54.3% of the total water consumption

although the inter-annual change ranges are lower（-5% to 8%）.The water resource problems are discussed in this paper based on the analysis of changes in water storage and the evapotranspiration structure

and some suggestions for region water source management and water-saving society construction are proposed.