METHOD AND APPARATUS FOR MONITORING THE ADVANCE OF SEAWATER INTO FRESH WATER AQUIFERS NEAR COASTAL CITIES

摘要

A method of using an observation well which penetrates a water aquifer in an earth formation that is located near coastal cities to measure and obtain data representative of a characteristic of the water in said aquifer, said observation well having water disposed therein, comprising the steps of: (a) locating an electrode inside said observation well, a depth of said electrode in said observation well being known; and (b) using said electrode, determining when a level of said water in said observation well traverses said electrode thereby determining a free head level of said water in said observation well through knowledge of said depth of said electrode in said observation well.