Assessment of pollution area's sizes natural ground waters infiltration stream

The task about movement of ground waters in the interfluves massif of soil in the presence of an infiltration food from an earth surface is described in article.This task is actual as rather often meets in engineering practice.The simplest scheme of the solution of tasks about movement of ground waters - model use gradually changing movement at which live sections of a stream can be considered vertical and flat is submitted, and the average speed of a filtration in section can be determined on Dupuis's formula.