Date of Award

4-20-2017

Document Type

Thesis

Degree Name

Biology, MS

First Advisor

Jerry Farris

Committee Members

Brook Fluker; Michele Reba

Call Number

LD251 .A566t 2017 H33

Abstract

Reservoir tailwater recovery systems (R-TWRS) have helped shift considerations for a broader array of water storage and irrigation techniques for conventional crop production in the Mississippi River basin under conditions of declining recharge and developing cones of depression in the Mississippi Alluvial Aquifer (alluvial aquifer). Sustaining groundwater supplies further emphasizes potential water quality changes that can occur within and downstream of production sites. This study examined water quality characteristics throughout three reservoir tailwater recovery systems (R-TWRS) during events of water movement from irrigation, significant precipitation, and drawdown. While orthophosphate, dissolved nitrate, and nitrite concentrations were significantly different among R-TWRS and their components, concentrations failed to trend similarly during 2015 and 2016 growing seasons. The observed measured relationships between site locations within systems and water quality variables suggest that conditions surrounding water storage and movement were more heavily influenced by episodic precipitation than by R-TWRS best management practices (BMPs).

Rights Management

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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