Methodological basics of assessing ecological safety in the zones where waterworks units influence natural habitats with the use of water resources

Relying on the results of the long-term studies on the interrelation, interaction and correlation of waterworks units, called an "activity object", as a part of natural engineering systems "natural habitat-activity object-population" with the environment within a basin geosystem, the article reports on the methodological framework of evaluating the quantitative and qualitative indicators for the zones of activity object influence as important factors of environment safety assurance.