Analysis of factors controlling groundwater flow for prediction of rates of groundwater movement and changes in quality, Atlantic coastal plains.

Persistent Link:
http://hdl.handle.net/10150/190990
Title:
Analysis of factors controlling groundwater flow for prediction of rates of groundwater movement and changes in quality, Atlantic coastal plains.
Author:
Ganus, William Joseph,1936-
Issue Date:
1972
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 development of an open pit phosphate mine in 1965 near Aurora, North Carolina, required groundwater withdrawals in excess of 50 million gallons per day for pressure relief from the underlying confined Castle Hayne aquifer. The effects of pumping from this limestone aquifer were widespread, extending over an area of more than 2,000 square miles in the first year before the pressure cone reached a stabilized condition. Salt water encroachment by lateral movement from downdip in the aquifer and by downward leakage from the Pamlico Estuary and Sound was possible if prolonged pumping were permitted. A joint project between state and industry in 1970-71 focused on analyzing the effects of five years of pumping for the purpose of making projections of future conditions of groundwater quality for continued and expanded groundwater development. The present study describes the method of flow net analysis used in the joint project to determine quantitatively the values of aquitard vertical permeability and aquifer transmissivity. These values provided the rational basis for making projections of groundwater movement and quality changes associated with this movement, A hydrologic projection model, developed in the present study, integrates the quality and volumetric flow of vertical leakage with that of lateral flow. Projection analyses are presented for two hypothetical cases of chloride distribution changed by continued pumping and for chloride changes associated with three different pumping regimes in the subject area.
Type:
Dissertation-Reproduction (electronic); text
Keywords:
Hydrology.; Groundwater flow -- Analysis.; Water quality -- North Carolina.
Degree Name:
Ph. D.
Degree Level:
doctoral
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Harshbarger, John W.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleAnalysis of factors controlling groundwater flow for prediction of rates of groundwater movement and changes in quality, Atlantic coastal plains.en_US
dc.creatorGanus, William Joseph,1936-en_US
dc.contributor.authorGanus, William Joseph,1936-en_US
dc.date.issued1972en_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 development of an open pit phosphate mine in 1965 near Aurora, North Carolina, required groundwater withdrawals in excess of 50 million gallons per day for pressure relief from the underlying confined Castle Hayne aquifer. The effects of pumping from this limestone aquifer were widespread, extending over an area of more than 2,000 square miles in the first year before the pressure cone reached a stabilized condition. Salt water encroachment by lateral movement from downdip in the aquifer and by downward leakage from the Pamlico Estuary and Sound was possible if prolonged pumping were permitted. A joint project between state and industry in 1970-71 focused on analyzing the effects of five years of pumping for the purpose of making projections of future conditions of groundwater quality for continued and expanded groundwater development. The present study describes the method of flow net analysis used in the joint project to determine quantitatively the values of aquitard vertical permeability and aquifer transmissivity. These values provided the rational basis for making projections of groundwater movement and quality changes associated with this movement, A hydrologic projection model, developed in the present study, integrates the quality and volumetric flow of vertical leakage with that of lateral flow. Projection analyses are presented for two hypothetical cases of chloride distribution changed by continued pumping and for chloride changes associated with three different pumping regimes in the subject area.en_US
dc.description.notehydrology collectionen_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.typetexten_US
dc.subjectHydrology.en_US
dc.subjectGroundwater flow -- Analysis.en_US
dc.subjectWater quality -- North Carolina.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairHarshbarger, John W.en_US
dc.contributor.committeememberEvans, Daniel D.en_US
dc.contributor.committeememberWright, Jerome J.en_US
dc.contributor.committeememberInce, Simonen_US
dc.contributor.committeememberWilson, L. G.en_US
dc.identifier.oclc212909067en_US
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