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dc.contributor.advisorHawkins, Richard H.en
dc.contributor.authorLaprevote, James Arthur
dc.creatorLaprevote, James Arthuren
dc.date.accessioned2018-02-26T18:35:08Z
dc.date.available2018-02-26T18:35:08Z
dc.date.issued1997
dc.identifier.urihttp://hdl.handle.net/10150/626812
dc.description.abstractAnnual suspended sediment yields for 17 watersheds in western Montana in a mild drought are recalculated. Previous methodology used sporadic to weekly direct measurements taken only during the annual snowmelt during the drought to estimate drought period yields. Yield approximations for wet period flows relied on predicted increases in the means of flow and sediment concentration of the measured values. This study uses synthetic flow duration curves developed using regional data of a longer period of record for drought and wet period estimates. These are combined with log-transformed sediment rating curves which are bias corrected. Mean flows for the drought average of half previous calculations, sediment yields average 70 percent less. The bias correction averages + 33 percent. Estimates of sediment yield due to increases in flow are 60 percent less than previous approximations.
dc.language.isoen_USen
dc.publisherThe University of Arizona.en
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
dc.titleSuspended sediment yields for selected watersheds in western Montanaen_US
dc.typetexten
dc.typeThesis-Reproduction (electronic)en
thesis.degree.grantorUniversity of Arizonaen
thesis.degree.levelmastersen
dc.contributor.committeememberHawkins, Richard H.en
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplineHydrology and Water Resourcesen
thesis.degree.nameM.S.en
dc.description.noteDigitized from paper copies provided by the Department of Hydrology & Atmospheric Sciences.en
refterms.dateFOA2018-07-11T08:20:06Z
html.description.abstractAnnual suspended sediment yields for 17 watersheds in western Montana in a mild drought are recalculated. Previous methodology used sporadic to weekly direct measurements taken only during the annual snowmelt during the drought to estimate drought period yields. Yield approximations for wet period flows relied on predicted increases in the means of flow and sediment concentration of the measured values. This study uses synthetic flow duration curves developed using regional data of a longer period of record for drought and wet period estimates. These are combined with log-transformed sediment rating curves which are bias corrected. Mean flows for the drought average of half previous calculations, sediment yields average 70 percent less. The bias correction averages + 33 percent. Estimates of sediment yield due to increases in flow are 60 percent less than previous approximations.


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