Decision of The Hydraulic State of Rivers within Growth Cities using GIS: Al-Hneidiyah River as Example

Generally, the rivers in both natural and lined form use open-section system to carry water, either for distribution or conveyance purposes. With time depreciation effect, this needs be changed modified become more indirectly suitable with cities' growth, especially transformation of land from agricultural residential. The present paper aims reach a proper decision select best hydraulic section part Al-Hneidiyah river Karbala city by determining remain lands within study area, distance between stations (0+000) (4+000), choose keeping up currently open change, (modify), it closed conduit. For study, cadastral maps were used as reference determine areas served during its route geographic information monitor change like these represented gradual residential purpose, using satellite images four different years, 2002, 2007, 2013, 2016. results showed significant recession on sides chosen length percentage 13.45%, which leads an urgent need modify flow opened only purposes protect water quality shares. is good helpful technique evaluation makes water-related subjects decisions giving clear vision studied problem.