Development of Basin Factor Methodology for the Pima County Hydrology Procedures

Persistent Link:
http://hdl.handle.net/10150/193328
Title:
Development of Basin Factor Methodology for the Pima County Hydrology Procedures
Author:
Stewart, Dave
Issue Date:
2008
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 basin factor is a hydrologic parameter that represents the overall impedance to flow of a watershed in the PC-Hydro peak discharge model for small ( < 10 mi2) semi-arid watersheds in Pima County, Arizona. To improve peak discharge estimates and provide validation of the basin factor as a physically-based parameter, basin factor values were "back-calculated" for return period and observed events on six undeveloped rangeland watersheds and correlated with Manning's n roughness coefficients, rainfall intensities, and hydraulic radii. Observed basin factor values displayed a positive trend with observed peak discharge. The results suggest that the correlated variables can predict the basin factor on small undeveloped sub-basins in Pima County and the basin factor is measurable as a physical parameter. Empirical models for basin factor prediction are proposed. The study may also be useful for estimating hydraulic roughness in hydrologic methods such as the kinematic wave time of concentration equation.
Type:
text; Electronic Thesis
Keywords:
basin factor; peak discharge; hydrologic roughness; time of concentration; hydraulic roughness
Degree Name:
MS
Degree Level:
masters
Degree Program:
Engineering; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Yitayew, Muluneh
Committee Chair:
Yitayew, Muluneh

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleDevelopment of Basin Factor Methodology for the Pima County Hydrology Proceduresen_US
dc.creatorStewart, Daveen_US
dc.contributor.authorStewart, Daveen_US
dc.date.issued2008en_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 basin factor is a hydrologic parameter that represents the overall impedance to flow of a watershed in the PC-Hydro peak discharge model for small ( < 10 mi2) semi-arid watersheds in Pima County, Arizona. To improve peak discharge estimates and provide validation of the basin factor as a physically-based parameter, basin factor values were "back-calculated" for return period and observed events on six undeveloped rangeland watersheds and correlated with Manning's n roughness coefficients, rainfall intensities, and hydraulic radii. Observed basin factor values displayed a positive trend with observed peak discharge. The results suggest that the correlated variables can predict the basin factor on small undeveloped sub-basins in Pima County and the basin factor is measurable as a physical parameter. Empirical models for basin factor prediction are proposed. The study may also be useful for estimating hydraulic roughness in hydrologic methods such as the kinematic wave time of concentration equation.en_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
dc.subjectbasin factoren_US
dc.subjectpeak dischargeen_US
dc.subjecthydrologic roughnessen_US
dc.subjecttime of concentrationen_US
dc.subjecthydraulic roughnessen_US
thesis.degree.nameMSen_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorYitayew, Mulunehen_US
dc.contributor.chairYitayew, Mulunehen_US
dc.identifier.proquest2938en_US
dc.identifier.oclc659749577en_US
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