Sensitivity Analysis Methods and Results for Tucson Water's Central Wellfield Groundwater Flow Model, Tucson Basin, Southeastern Arizona

Persistent Link:
http://hdl.handle.net/10150/191338
Title:
Sensitivity Analysis Methods and Results for Tucson Water's Central Wellfield Groundwater Flow Model, Tucson Basin, Southeastern Arizona
Author:
Doolen, Matthew Louis.
Issue Date:
1994
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A sensitivity analysis was performed for Tucson Water's Central Wellfield (CWF) flow model to determine response to changes in aquifer and stress parameters and to evaluate various comparative methods. Changes were made to hydraulic conductivity, storage coefficients, anisotropy factors, recharge rates, évapotranspiration rates and depths, layer thicknesses, and groundwater pumping. Water table elevation maps and cross sections, head residual maps, head crossplots, hydrographs, and residual statistics were used to compare heads from each sensitivity run with the calibrated steady state and transient state models. Water budgets were also compared. The CWF model is most sensitive to recharge rate changes, storativity decrease, layer thickness, and an increase in the row-to-column anisotropy factor, but is relatively robust to changes in other parameters. No single comparative method should serve as the sole basis for determining model sensitivity to parameter changes.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater -- Arizona -- Tucson Region.; Groundwater flow -- Arizona -- Tucson Region -- Mathematical models.; Groundwater flow -- Analysis.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Maddock, T.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleSensitivity Analysis Methods and Results for Tucson Water's Central Wellfield Groundwater Flow Model, Tucson Basin, Southeastern Arizonaen_US
dc.creatorDoolen, Matthew Louis.en_US
dc.contributor.authorDoolen, Matthew Louis.en_US
dc.date.issued1994en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA sensitivity analysis was performed for Tucson Water's Central Wellfield (CWF) flow model to determine response to changes in aquifer and stress parameters and to evaluate various comparative methods. Changes were made to hydraulic conductivity, storage coefficients, anisotropy factors, recharge rates, évapotranspiration rates and depths, layer thicknesses, and groundwater pumping. Water table elevation maps and cross sections, head residual maps, head crossplots, hydrographs, and residual statistics were used to compare heads from each sensitivity run with the calibrated steady state and transient state models. Water budgets were also compared. The CWF model is most sensitive to recharge rate changes, storativity decrease, layer thickness, and an increase in the row-to-column anisotropy factor, but is relatively robust to changes in other parameters. No single comparative method should serve as the sole basis for determining model sensitivity to parameter changes.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater -- Arizona -- Tucson Region.en_US
dc.subject.lcshGroundwater flow -- Arizona -- Tucson Region -- Mathematical models.en_US
dc.subject.lcshGroundwater flow -- Analysis.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairMaddock, T.en_US
dc.identifier.oclc213470761en_US
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