Ecological Aspects of the Transboundary Rivers Water Resource Management of the Central Asia

2. Institute of Water Problems, Hydropower and Ecology of the AS Republic of Tajikistan, Tajikistan

Abstract: In most cases the problem of water quality of the Zeravshan River consider in organic communication with activity of the Anzob Mountain-concentrating combine (AMCC). AMCC is the mining enterprise for extraction and enrichment of complex mercury-antimony ores of the Dzhizhikrut deposit. It is located in a right-bank part the rivers Dzhizhikrut which are the left inflow of the river Yagnob (the river Yagnob is the right inflow of the river Fondarya which in turn is the left inflow of the river Zeravshan). For definition influence of the AMCC on qualities of waters of the river Zeravshan were made sampling of water from the river in two points - on Fondarya and Pete Rivers is located accordingly before and after wastewater dams of AMCC. Comparison of results chemical analyses have shown about absence of the factor of pollution of the river Zeravshan by wastewaters of industrial complex. Detected change (heavier) isotopic composition (δ2Н, δ18O) of the Zeravshan River and its tributaries from upstream to the downstream of the river associated with the evaporation process. The exchanges of groundwater and surface waters in Muksu river basin was observed. The groundwater reservoirs of the Muksu River Basin (a tributary of the Vakhsh River) in dry periods nourishes the river Muksu.