Date of Award:

5-2013

Document Type:

Dissertation

Degree Name:

Doctor of Philosophy (PhD)

Department:

Civil and Environmental Engineering

Committee Chair(s)

Darwin L. Sorensen

Committee

Darwin L. Sorensen

Abstract

Pineview Reservoir, near Utah’s populous Wasatch Front, could play an important role in modulating water supply as water demands and water uses change in response to increasing population densities. The reservoir’s water quality may decline if nitrogen and phosphorus additions to the reservoir are not controlled. Most of the water flowing into the reservoir in summer and fall is contributed by the shallow ground water. The quantity and quality of the shallow ground water to Pineview Reservoir were studied from February 2010 through November 2011. The objectives were to: 1) increase understanding of nitrogen and phosphorus transport from ground water to the reservoir; 2) understand the differences in ground water flows and transport of nitrogen and phosphorus from different locations in a mountainous irrigated valley; and 3) estimate the nitrate contributions of cropland, lawns, and onsite wastewater to ground water. Large variations in nitrogen and phosphorus transport from different locations and land uses were observed. This information will help water managers, town planners and water users to make informed decisions on how to protect or improve the reservoir’s water quality.

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