Abstract
This paper is dealt with the hydraulic effect of cut-off wall in unconfined layers, based on the steady ground water theory given by Dupuit's assumption. Two cases of flow are analyzed; one is concerned with the storage volume, change of flow rate and change of water depth in unconfined layer on the horizontal impermeable layer, and another is dealt with those of inclined aquifer. Some available informations are proposed by detail examinations of theoretical results and computation examples for the ground water behavior of unconfined layer having the cut-off wall.
