Capturing the essential spatial variability in urban hydrologic miodeling by GIS.

Persistent Link:
http://hdl.handle.net/10150/191306
Title:
Capturing the essential spatial variability in urban hydrologic miodeling by GIS.
Author:
Zhang, Lihong.
Issue Date:
1999
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:
Three different digital elevation models with 10 ft, 25 ft, and 50 ft resolutions, and several algorithms were used to derive parameters for HEC -HMS hydrologic model for the prediction of runoff from an urban watershed. GIS techniques were used to delineate the sub-basins and to extract hydrologic parameters required for the HEC-HMS hydrologic model. D8 (deterministic 8 nodes) and DEMON (digital elevation model networks) were used to calculate the area of each sub-basin, while maximum slope and neighborhood methods were used to obtain the slope. Comparison of the simulated runoff peak flow and runoff depth with the observed data showed that the simulation results fit the observed values well. Because of the relatively flat topography, only the different DEN • resolutions caused significant differences in runoff in the study. In addition, the effects of different overland flow plane defining are also discussed in the study. Simulation results using impervious and pervious area to represent two separate planes were much different from those using main channel separated Planes. Meanwhile, pervious and impervious area weighted average CN showed better results than using total plane weighted average CN in an urban area.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Watershed management -- Arizona.; Urban hydrology.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Renewable Natural Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Ball, George

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleCapturing the essential spatial variability in urban hydrologic miodeling by GIS.en_US
dc.creatorZhang, Lihong.en_US
dc.contributor.authorZhang, Lihong.en_US
dc.date.issued1999en_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.abstractThree different digital elevation models with 10 ft, 25 ft, and 50 ft resolutions, and several algorithms were used to derive parameters for HEC -HMS hydrologic model for the prediction of runoff from an urban watershed. GIS techniques were used to delineate the sub-basins and to extract hydrologic parameters required for the HEC-HMS hydrologic model. D8 (deterministic 8 nodes) and DEMON (digital elevation model networks) were used to calculate the area of each sub-basin, while maximum slope and neighborhood methods were used to obtain the slope. Comparison of the simulated runoff peak flow and runoff depth with the observed data showed that the simulation results fit the observed values well. Because of the relatively flat topography, only the different DEN • resolutions caused significant differences in runoff in the study. In addition, the effects of different overland flow plane defining are also discussed in the study. Simulation results using impervious and pervious area to represent two separate planes were much different from those using main channel separated Planes. Meanwhile, pervious and impervious area weighted average CN showed better results than using total plane weighted average CN in an urban area.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshWatershed management -- Arizona.en_US
dc.subject.lcshUrban hydrology.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineRenewable Natural Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairBall, Georgeen_US
dc.contributor.committeememberHawkins, Richard H.en_US
dc.contributor.committeememberLansey, Kevinen_US
dc.identifier.oclc217289819en_US
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