Exact simulation of the groundwater flow in anisotropic confined aquifer near time-varying streams by comprehensive new analytical solutions

Abstract This paper presents some new analytical solutions to an accurate prediction of the behavior groundwater flow in aquifers response changes surface water. The are obtained using integral transforms. An anisotropic rectangular confined aquifer bounded with four time-varying streams is undertaken. effects anisotropy on head and rate near investigated. Depending change rates level, may render either lower or higher hydraulic than isotropic aquifer. In addition, has provided less water exchange at interfaces one. sensitivity level both evaluated. It shown that more sensitive parallel y -direction x vice versa results present compared numerical model MODFLOW. from presented showed good agreement show accurate, robust efficient. Therefore, indicate very effective simulation river–aquifer systems. Furthermore, one advantages investigate analysis parameters, which been carried out this paper. Also, other for steady-state conditions sudden fall as well. Feasibility proposed via calculating simulating hydraulics systems by means