Abstract:

Water resource assessment map is a traditional and new form of evaluation results.It can reflect the characteristics and laws of the water resources by visual methods and it is the basic method of exploiting and   protecting water resources.3S technology has been widely developed and used in many areas;the feasibility of fabricating assessment map by use of 3S technology were convinced according to the status and features of assessment map.Taking the fabrication of water resources assessment map of Zhanghe River as an example,the thesis came up with the procedure,general flow,methods,key technology,output form based on 3S.This thesis concluded that the integration of RS and GIS could better realize the interpolation of data,the integration of GPS and GIS could acquire more highprecision positioning data,expansion of symbol library could better display the results of assessment.The authors also discussed its superiority compared with the traditional methods of making map and its inevitable direction of assessment map.

Key words: 3S/  water resource assessment map/ Zhanghe River