The aim of this work - revealing the diversity of algae leading complexes of different taxonomic groups (except for diatoms) of different types of water basin Silova-Jakha River and assessing the environmental status of water bodies on the basis of hydro-chemical data. The quality of natural waters is determined by a complex of factors, among which the most significant are geological and climatic conditions. Was shown relatively high species diversity of algae in investigated water bodies, marked species listed in the Red-list of the Republic of Komi. «Algal blooms» of water was observed in thermokarst lakes, which is their specialty and is caused by the combination of natural factors. Natural complexes area recommended for inclusion in the protected area of regional significance.