Stop saltwater intrusion toward water wells using scavenger wells

Document Type

Conference Proceeding

Publication Date

7-21-2011

Abstract

On October 28, 2009, chloride concentration of 182 mg/L was measured in the water well EB-658 (Lula-19) that screened the "1,500-foot" sand of the Baton Rouge area, Louisiana. This poses a concern that high chloride front may have come to Lula wells. To better understand the current situation of saltwater intrusion and to resolve this urgent issue, the study aims to utilize scavenger wells to prevent high chloride concentration from reaching EB-658. Simulation results indicated, at current withdrawal rates, EB-658 would encounter high chloride concentration about 750 mg/L within the next 25 years, and about 1,500 mg/L within the next 50 years. Using scavenger wells with a total of extraction rate less than one million gallons per day is possible to keep chloride concentration at EB-658 less than 150 mg/L for next 50 years. Impacts of scavenger wells on increasing water pressure difference, flow velocity, and chloride mass rate across the Baton Rouge fault are not significant. © 2011 ASCE.

Publication Source (Journal or Book title)

World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability - Proceedings of the 2011 World Environmental and Water Resources Congress

First Page

904

Last Page

913

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