The Upper Noteć Subregional Water Distribution System is a pilot system set up in order to improve water management in regions with water resources deficiencies. The assumptions implemented in that system were a base for setting up similarly water distribution system located in Upper Narew valley (Upper Narew Subregional Water Distribution System). The aim of this work is a representation of the conception of water management in reclaimed, intensive used part of Upper Narew valley and conditions of its practical application. General principles of water resources management were shown in the paper. Subregion Lipnicki was presented as an example of subregional water system. The algorithms of water distribution with main principles connected with its organization were described, also. An instruction of water distribution together with a software package are the practical base of functionings aiming at efficient water resources management in catchment area. The general conditions of reality of practical application of the conception were presented in the summary.