TY JOUR TI The condition of water accounting points on irrigation systems of the South and North Caucasus federal districts KW hydrometric network KW water metering station KW measuring instrument KW irrigation system KW structure KW rail KW security level JO Melioration and Water Management AU Vaynberg, M.V. AU Shepelev, A.Y. PY 2026 IS 2025 PB ANO Editorial Board Melioration and water management