%0 Journal Article %T Ecological and geochemical state of water objects of the Ivankovskoe reservoi %A Matveev, A.V. %K database, GIS project, water objects, environmental monitoring, pollution maps, heavy metals, bottom sediments, environmental safety, increased technogenic load, structured query language, network technologies %J Melioration and Water Management %D 2023 %N 2022 %P 2 %I ANO Editorial Board Melioration and water management