Electronic Theses and Dissertations



Document Type


Degree Name

Master of Science


Earth Sciences

Committee Chair

Deborah Leslie

Committee Member

Dan Larsen

Committee Member

Hsiang-te Kung

Committee Member

Michele Reba


Overdraft of the Mississippi River Valley alluvial aquifer in eastern Arkansas has resulted in groundwater decline and led to the designation of critical groundwater areas. Managed aquifer recharge using infiltration galleries and on-farm reservoir source water is being investigated as a strategy for sustaining groundwater resources. Mineralogical analyses, water quality data and geochemical modeling were used to predict chemical reactions commonly associated with mineral-water reactions from surface water-groundwater interactions. Alluvial aquifer sediment is dominated by quartz and feldspars, with little expandable smectic clay in the unsaturated zone that pose risk for reducing infiltration rates and inducing reactions along the flow path. Geochemical data suggest groundwater quality following injection of reservoir water will be most heavily influenced by the dissolution/precipitation of carbonate minerals and cation exchange. Reservoir constituent levels during the injection season should not pose a contamination risk, as they generally do not exceed groundwater concentrations.


Data is provided by the student.

Library Comment

Dissertation or thesis originally submitted to ProQuest.


Open access