Seth Peterson

Document Type

Thesis - University Access Only

Award Date

1995

Degree Name

Master of Science (MS)

Department / School

Civil and Environmental Engineering

First Advisor

Delvin E. DeBoer

Abstract

The Warren aquifer near Huron, South Dakota was first injected with treated water, from the City of Huron, in June of 1994, with injection of 9.1 million gallons over a 58 day period. Sampling of the injection water and of nearby monitoring wells occurred throughout the injection period as well as after the injection period. The injection water reached two monitoring well clusters located in a southerly direction from the injection well. As injection proceeded, water at the affected monitoring wells approached the injected water quality. Previous studies showed that iron, manganese, calcium and magnesium would precipitate. However, in this full scale injection phase it was determined that calcium and magnesium were removed by ion exchange in the recharge area whereas dissolution of iron and manganese occurred. Pump tests performed before and after injection showed that transmissivity of the aquifer and specific capacity of the pumped well decreased, most likely due to air entrainment due to negative pressures on the injection pipe in the well house.

Library of Congress Subject Headings

Groundwater -- South Dakota -- Huron Region -- Quality
Artificial recharge of groundwater -- South Dakota -- Huron Region
Aquifers -- South Dakota -- Huron Region

Format

application/pdf

Publisher

South Dakota State University

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Rights Statement

In Copyright