Electronic Theses and Dissertations

Identifier

522

Date

2012

Document Type

Thesis

Degree Name

Master of Science

Major

Civil Engineering

Concentration

Water Resources Engineering

Committee Chair

Brian Waldron

Committee Member

Dan Larsen

Committee Member

Jerry Anderson

Abstract

Groundwater/surface water interaction is accounted for in various groundwater models by the use of terms such as MODFLOW's riverbed conductance term. A pilot-study was conducted in which an instrumentation suite was designed to collect in situ data to claculate such terms and determine how riverbed properties change laterally and with depth. Pipes installed at three discreet measurement depths were placed in nests across a sand bottom stream to conduct slug tests to measure Kh and water levels over time to calculate the hydraulic gradients. Point discharge measurements were made to confirm gradient direction and calculate an approximate Kv for comparison with the Kh measurements. The results show that Kh and gradients vary horizontally and with depth confirmed by an analysis of variance. Discharge measurements did not always confirm gradient direction, however the comparison of the approximated Kv and Kh values fell within the typical Kh/Kv ratios for aquifers.

Comments

Data is provided by the student.

Library Comment

Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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