Аннотация:The main characteristics of the water regime of the Volga and Ural deltas and their spatial and tem
poral variations conditioned by the rise in the Caspian Sea level are discussed. The regularities of penetration of backwater, caused by sea-level rise and wind-induced surges, into the deltas of the Volga and the Ural with allowance for changes in the water discharge of these rivers and the Caspian Sea level are studied for the first time.