Mississippi State University
Tagert, Mary Love
Krutz, L. Jason
Date of Degree
Original embargo terms
Visible to MSU only for 1 year
Graduate Thesis - Campus Access Only
Master of Science
James Worth Bagley College of Engineering
Department of Agricultural and Biological Engineering
Exploitation of groundwater and excess nutrient runoff are major issues plaguing agriculture and streams in the Lower Mississippi River Basin, and increased irrigation intensity has yielded a proportionate increase in water use. Quantifying the use and effects of conservation practices like on-farm water storage (OFWS) systems will justify continued adoption of these practices to mitigate groundwater decline and nutrient runoff. Since 2010, over 795 hectares of surface water storage has been added in the Big Sunflower River Watershed, and analysis of aquifer saturation shows a recent rise in the water table and a decrease in seasonal water table drawdowns. Modeling pre- and post- construction conditions of a small agricultural subwatershed shows little difference in runoff at the watershed outlet after the construction of an OFWS system, but field monitoring and modeling show more water retained within the system and the importance of management to maximize the benefits of conservation practices.
Support for the research was from the USDA ARS Sustainable Water Management Research Unit agreement 58-6001-8-003, project title Developing Sustainable Production Systems that Improve Water Resources in the Lower Mississippi River Basin Sustainable Water Management Research Unit is a component of the National Center for Alluvial Aquifer Research. The agreement was with the Mississippi Water Resources Research Institute.
Brock, Meredith Lynn, "Analysis of surface water for irrigation in the Big Sunflower River Watershed" (2021). Theses and Dissertations. 5086.