A Study of Impact of Urbanization on Ephemeral Streams in Headwater Watersheds in Eastern Pima County, AZ.

Persistent Link:
http://hdl.handle.net/10150/192122
Title:
A Study of Impact of Urbanization on Ephemeral Streams in Headwater Watersheds in Eastern Pima County, AZ.
Author:
Kumazawa, Naoto.
Issue Date:
2004
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:
In this study, the impact of urbanization on ephemeral streams in arid environments was assessed by comparing eight small headwater watersheds with different degrees of urbanization in Tucson, Arizona. Chronological change in urbanization, stream network, and downstream channel width were observed, employing GIS, orthophotos over thirty years, and field measurements. A decrease in drainage density caused by urbanization and a decrease in channel width were found in many study sites. The relationship between the chronological change in downstream channel width and the urbanization pattern in the watersheds was assessed using an index named Stream Based Urbanization Index that indicates spatial distribution of urbanization in watersheds in relation to streams. Based on the comparison of seven Index factors, a lower rate of decrease in channel width was observed in the watersheds with a higher urbanization, especially with a higher concentration of urbanization near streams among the general trend of channel narrowing.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Ephemeral streams -- Arizona -- Pima County.; Watersheds -- Arizona -- Pima County.
Degree Name:
M.L.A.
Degree Level:
masters
Degree Program:
Landscape Architecture; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Kim, Mintai

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleA Study of Impact of Urbanization on Ephemeral Streams in Headwater Watersheds in Eastern Pima County, AZ.en_US
dc.creatorKumazawa, Naoto.en_US
dc.contributor.authorKumazawa, Naoto.en_US
dc.date.issued2004en_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.abstractIn this study, the impact of urbanization on ephemeral streams in arid environments was assessed by comparing eight small headwater watersheds with different degrees of urbanization in Tucson, Arizona. Chronological change in urbanization, stream network, and downstream channel width were observed, employing GIS, orthophotos over thirty years, and field measurements. A decrease in drainage density caused by urbanization and a decrease in channel width were found in many study sites. The relationship between the chronological change in downstream channel width and the urbanization pattern in the watersheds was assessed using an index named Stream Based Urbanization Index that indicates spatial distribution of urbanization in watersheds in relation to streams. Based on the comparison of seven Index factors, a lower rate of decrease in channel width was observed in the watersheds with a higher urbanization, especially with a higher concentration of urbanization near streams among the general trend of channel narrowing.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshEphemeral streams -- Arizona -- Pima County.en_US
dc.subject.lcshWatersheds -- Arizona -- Pima County.en_US
thesis.degree.nameM.L.A.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineLandscape Architectureen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairKim, Mintaien_US
dc.contributor.committeememberLivingston, Margareten_US
dc.contributor.committeememberLopes, Vicenteen_US
dc.contributor.committeememberNichols, Mary H.en_US
dc.identifier.oclc213883505en_US
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