DETERMINATION OF THE ECOLOGICAL STATE OF THE KREMENCHUK RESERVOIR ON THE BASIS OF INFORMATION ENTROPY

It was established that the water does not meet upper limit of 1st quality class according to DSTU 4808:2007 by all indicators except for chloride ions, SPAR and suspended substances. There is a decrease in level BSK5 at monitoring post lower part reservoir, which indicates entry substances into watercourse inhibit biochemical processes. also an increasing trend content sulfates, phosphates, nitrogen compounds HSC control points located within influence industrial cities, along reservoir. The highest values entropy index are characteristic p2, p. Adamivka, Chygyryn district (0.59015) p3, village. Pronozivka Globyn district, (0.63092). These considerable distance from centers, so pollution caused agricultural production (application phosphate fertilizers) probably plays decisive role formation quality. smallest value (0.39397) item p1 – c. Sokirne, drinking intake city Cherkasy. non-torsion range 0.39397 (point p1) 0.63092 p3).