Master of Science (MS)
Water Resource Management
First Committee Member
Second Committee Member
Number of Pages
The Lower Virgin Valley's water resources are increasingly vital to Southern Nevada. This study sought to answer three questions of relevance to local water managers: (1) What is the spatial distribution of recharge to groundwater in a basin divided between three states? (2) How do streamflow and evapotranspiration affect the water table in the Virgin River floodplain? (3) How would long-term pumping of the floodplain aquifer affect the water table and the dependent phreatophytic vegetation? A Maxey-Eakin analysis showed that nearly 48 percent of rainfall-induced recharge to groundwater occurs in Nevada while nearly 49 percent occurs in Utah and just over three percent occurs in Arizona. A MODLFOW-2000 model of the floodplain aquifer demonstrated the link between seasonal water table fluctuation and variation in streamflow and evapotranspiration rates. Finally, simulation of a production well on the Virgin River floodplain demonstrated the potential for continuous pumping to threaten phreatophytic vegetation.
Hydrological; Interaction; Lower; Process; Subsurface; Surface; Valley; Virgin
University of Nevada, Las Vegas
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Baron, Alexander Grigor, "Interaction of surface and subsurface hydrological processes in the Lower Virgin Valley" (2007). UNLV Retrospective Theses & Dissertations. 2212.