Current Hydrological Conditions Research of the Chaika Lake System in the Territory of the Volga-Akhtuba Floodland

The nature protection measures performed within the national project "Ecology" on the lake system "Chaika" were analysed, the flooding status of the floodland before and after the measures implementation was compared with the equivalent special spring release. A positive effect in increasing the floodland area was confirmed. The chemical analysis results of water and composition of bottom sediments were presented. The bottom sediment was found fertile to be classified as calc-sapropel.