A process based method to estimate the hydrograph from small agricultural watersheds

Persistent Link:
http://hdl.handle.net/10150/191161
Title:
A process based method to estimate the hydrograph from small agricultural watersheds
Author:
Stone, Jeffry Joel,1948-
Issue Date:
1990
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 kinematic wave model for overland and channel flow is used to develop a method to calculate the runoff hydrograph from a watershed consisting of a cascade of planes and channels. First, a general, semi-analytic solution based on the method of characteristics and incorporating flow on infiltrating surfaces is derived. Unrealistic properties of previous solutions based on the method of characteristics are avoided by defining lateral inflow in relation to the presence or absence of flowing water on the flow surface. It is shown that the new definition of lateral inflow results in both a more physically realistic representation of the overland and channel flow process during the recession stage of the hydrograph and a more accurate estimation of runoff volume than obtained by previous solutions. Second, the concept of the storage of water at kinematic equilibrium is used to calculate a depth-discharge coefficient for a single plane system and a two plane, one channel system, each of which is hydraulically equivalent to a complex cascade of planes and channels. The method is validated on two rangeland watersheds in Arizona. The results show that hydrographs generated from the two simplified watershed geometries are essentially the same as those from complex geometries when the duration of the runoff event is equal to or greater than the time to kinematic equilibrium. At durations less than the time to kinematic equilibrium, the two plane, one channel system preserves the complex geometry properties better than the single plane system.
Type:
Dissertation-Reproduction (electronic); text
Keywords:
Hydrology.; Hydrographic surveying -- Technique.; Watersheds.
Degree Name:
Ph. D.
Degree Level:
doctoral
Degree Program:
Renewable Natural Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Lane, Leonard

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleA process based method to estimate the hydrograph from small agricultural watershedsen_US
dc.creatorStone, Jeffry Joel,1948-en_US
dc.contributor.authorStone, Jeffry Joel,1948-en_US
dc.date.issued1990en_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 kinematic wave model for overland and channel flow is used to develop a method to calculate the runoff hydrograph from a watershed consisting of a cascade of planes and channels. First, a general, semi-analytic solution based on the method of characteristics and incorporating flow on infiltrating surfaces is derived. Unrealistic properties of previous solutions based on the method of characteristics are avoided by defining lateral inflow in relation to the presence or absence of flowing water on the flow surface. It is shown that the new definition of lateral inflow results in both a more physically realistic representation of the overland and channel flow process during the recession stage of the hydrograph and a more accurate estimation of runoff volume than obtained by previous solutions. Second, the concept of the storage of water at kinematic equilibrium is used to calculate a depth-discharge coefficient for a single plane system and a two plane, one channel system, each of which is hydraulically equivalent to a complex cascade of planes and channels. The method is validated on two rangeland watersheds in Arizona. The results show that hydrographs generated from the two simplified watershed geometries are essentially the same as those from complex geometries when the duration of the runoff event is equal to or greater than the time to kinematic equilibrium. At durations less than the time to kinematic equilibrium, the two plane, one channel system preserves the complex geometry properties better than the single plane system.en_US
dc.description.notehydrology collectionen_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.typetexten_US
dc.subjectHydrology.en_US
dc.subjectHydrographic surveying -- Technique.en_US
dc.subjectWatersheds.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineRenewable Natural Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairLane, Leonarden_US
dc.contributor.committeememberFogel, Martinen_US
dc.contributor.committeememberSlack, Donen_US
dc.contributor.committeememberGuertin, Philen_US
dc.contributor.committeememberHart, Billen_US
dc.identifier.oclc221362518en_US
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