Physico-geographical conditions and hydrochemical state of local water bodies in the Еast Kazakhstan region

Abstract

The study is based on materials collected during field expeditions conducted in 2024 at Lake Kogedai and the pond near Station 23 km. The article provides brief physico-geographical descriptions of the water bodies, including their morphometric characteristics and geographic coordinates. The results of the hydrochemical analyses of Lake Kogedai and the Station 23 km pond are presented, covering assessments of physicochemical parameters, gas regime, mineralization, concentrations of organic and biogenic substances, as well as major ions. The obtained hydrochemical indicators were compared with the current fishery standards.

The aim of the present study was to carry out a physico-geographical characterization and a comprehensive assessment of the hydrochemical regime of the water bodies in order to determine their current hydrochemical status and to compare the results with existing fishery norms.

Lake Kogedai is characterized by a slightly alkaline reaction, an optimal oxygen regime, very low oxidizability, and low mineralization. The content of biogenic compounds did not exceed the established standards.

The pond at Station 23 km showed a favorable oxygen regime, low mineralization, and a slightly alkaline medium. No exceedances of biogenic compound concentrations were detected; overall, the pond conditions are optimal for the existence of hydrobionts.