Analysis of hydraulic capture zones and efficiency under time-varying flow and pumping conditions

Persistent Link:
http://hdl.handle.net/10150/192111
Title:
Analysis of hydraulic capture zones and efficiency under time-varying flow and pumping conditions
Author:
Festger, Adam Douglas.
Issue Date:
2000
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:
The capture zone of a groundwater extraction well can be defined as the portion of the aquifer from which the well draws its water. The accurate delineation of the capture zone is important in many groundwater remediation applications and in defining wellhead protection zones. Hydrologists often simplify the mathematical delineation of the capture zone by assuming the flow field is steady state and by using time-weighted average pumping rates and background gradients. However, this approach may not be adequate under actual transient flow conditions. A new approach to the estimation of the capture zone under time-varying flow is developed. Using the concept of capture efficiency, capture zones under time-varying flow conditions are compared to those computed using steady state averages. This thesis investigates the impact on the capture zone of intermittent pumping, time-varying background hydraulic gradients, and nearby wells pumping at both intermittent and constant rates.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater flow -- Mathematical models.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Neuman, Shlomo P.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleAnalysis of hydraulic capture zones and efficiency under time-varying flow and pumping conditionsen_US
dc.creatorFestger, Adam Douglas.en_US
dc.contributor.authorFestger, Adam Douglas.en_US
dc.date.issued2000en_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.abstractThe capture zone of a groundwater extraction well can be defined as the portion of the aquifer from which the well draws its water. The accurate delineation of the capture zone is important in many groundwater remediation applications and in defining wellhead protection zones. Hydrologists often simplify the mathematical delineation of the capture zone by assuming the flow field is steady state and by using time-weighted average pumping rates and background gradients. However, this approach may not be adequate under actual transient flow conditions. A new approach to the estimation of the capture zone under time-varying flow is developed. Using the concept of capture efficiency, capture zones under time-varying flow conditions are compared to those computed using steady state averages. This thesis investigates the impact on the capture zone of intermittent pumping, time-varying background hydraulic gradients, and nearby wells pumping at both intermittent and constant rates.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater flow -- Mathematical models.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.chairNeuman, Shlomo P.en_US
dc.identifier.oclc216934851en_US
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