Interaction of ground and surface water in Khabarovsk water node area

Abstract

This research presents the results of long-term monitoring of groundwater levels within the Khabarovsk water node in the Amur and Tunguska interfluve on the area of the Middle Amur artesian basin in the aquifer of Pliocene-Lower Quaternary alluvial deposits. Observations have been carried out on 9 groups of wells of external monitoring and 5 groups of wells of internal monitoring at the Tunguska reservoir, with a depth of 3 observation wells in the group from 15 to 50 m. The interaction parameters of groundwater and the Pemzenskaya channel have been specified for the period from 2012 to 2020. When the channel causes groundwater afflux during the flood, the average value of the equivalent length parameter ∆L is 40 m for the upper level of the aquifer, 87 m – for the middle level, and it is 605 m for the lower level. Vertical water exchange in the productive strata in the shore zone of the channel is characterized by the values of the overflow coefficient of 0.136 days-1 between the upper and middle observation levels and 0.0116 days-1 between the middle and lower levels.