Ivanova N. Hydrological factors of formation of ecological condition of Sasyk reservoir.

The main ecohydrological factors of formation of ecological state of Sasyk reservoir at different stages of its existence are defined and estimated, in particular water exchange, hydrodynamic processes, hydrophysical properties of water masses, features of bottom sediments, hydrochemical indicators of water masses and coastal zone formation processes. Their research is based on methodology base of Ecohydrology. Due to the anthropogenic transformation of the reservoir, all factors have changed. Today the water exchange of the reservoir is less intensive than in the period of formation. A feature of hydrophysical and hydrochemical parameters is their variability and mosaic. The total mineralization of water during the research was 0.30-2.54 g/dm3 and in most parts of the water did not meet water management requirements.