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Hydrodynamic and Water Quality Modeling of the Chehalis River Using CE-QUAL-W2

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Τίτλος: Hydrodynamic and Water Quality Modeling of the Chehalis River Using CE-QUAL-W2
Συγγραφείς: Van Glubt, Sarah
Πηγή: Dissertations and Theses
Στοιχεία εκδότη: PDXScholar
Έτος έκδοσης: 2017
Συλλογή: Portland State University: PDXScholar
Θεματικοί όροι: Flood control -- Environmental aspects -- Washington (State) -- Chehalis River, Hydrodynamics -- Mathematical models -- Case studies, Dams -- Environmental aspects -- Washington (State) -- Chehalis River, Floodplain management -- Washington (State) -- Chehalis River Watershed, Water quality -- Mathematical models -- Case studies, Civil and Environmental Engineering, Water Resource Management
Περιγραφή: The Chehalis River Basin is located in the southwest region of Washington State, originating in the Olympic Mountains and flowing to Grays Harbor and the Pacific Ocean. The Chehalis River is over 125 miles, exists within five counties, and flows through agricultural, residential, industrial, and forest land areas. Four major rivers discharge to the Chehalis River, as well as many smaller creeks, five wastewater treatment plants, and groundwater flows. Flooding is a major problem in the relatively flat areas surrounding the cities of Chehalis and Centralia, with severe consequences for property, safety and transportation. As a result, construction of a flood-control dam in the upper basin has been proposed. One major concern of constructing a dam is the potentially severe impacts to fish health and habitat. The Chehalis River has routinely violated water quality standards for primarily temperature and dissolved oxygen, and has had multiple water quality and Total Maximum Daily Load studies beginning in 1990. CE-QUAL-W2, a two-dimensional (longitudinal and vertical) hydrodynamic and water quality model, was used to simulate the Chehalis River, including free flowing river stretches and stratified (in summer) lake-like stretches. The goals of this research were to assess the flood retention structure's impacts to water quality, as well as river responses to potential climate change scenarios. In order to use the model to achieve these goals, calibration to field data for flow, temperature, and water quality constituents was performed. This involved developing meteorological data, riparian shading data, and flow, temperature, water quality records for all tributaries during the calibration period of January 1, 2013 to December 31, 2014. System cross-sectional geometry data were also required for the model grid. Because of the short travel time in the river, the model was sensitive to boundary condition data, wind speed, bathymetry, nutrient kinetics, and algae, epiphyton, and zooplankton kinetics. Future conditions ...
Τύπος εγγράφου: text
Περιγραφή αρχείου: application/pdf
Γλώσσα: English
Relation: https://pdxscholar.library.pdx.edu/open_access_etds/3486; https://pdxscholar.library.pdx.edu/context/open_access_etds/article/4495/viewcontent/VanGlubt_psu_0180E_11739.pdf
DOI: 10.15760/etd.5370
Διαθεσιμότητα: https://pdxscholar.library.pdx.edu/open_access_etds/3486
https://doi.org/10.15760/etd.5370
https://pdxscholar.library.pdx.edu/context/open_access_etds/article/4495/viewcontent/VanGlubt_psu_0180E_11739.pdf
Rights: In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Αριθμός Καταχώρησης: edsbas.65033800
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  Data: Hydrodynamic and Water Quality Modeling of the Chehalis River Using CE-QUAL-W2
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  Data: Dissertations and Theses
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  Data: 2017
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  Data: Portland State University: PDXScholar
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  Data: <searchLink fieldCode="DE" term="%22Flood+control+--+Environmental+aspects+--+Washington+%28State%29+--+Chehalis+River%22">Flood control -- Environmental aspects -- Washington (State) -- Chehalis River</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics+--+Mathematical+models+--+Case+studies%22">Hydrodynamics -- Mathematical models -- Case studies</searchLink><br /><searchLink fieldCode="DE" term="%22Dams+--+Environmental+aspects+--+Washington+%28State%29+--+Chehalis+River%22">Dams -- Environmental aspects -- Washington (State) -- Chehalis River</searchLink><br /><searchLink fieldCode="DE" term="%22Floodplain+management+--+Washington+%28State%29+--+Chehalis+River+Watershed%22">Floodplain management -- Washington (State) -- Chehalis River Watershed</searchLink><br /><searchLink fieldCode="DE" term="%22Water+quality+--+Mathematical+models+--+Case+studies%22">Water quality -- Mathematical models -- Case studies</searchLink><br /><searchLink fieldCode="DE" term="%22Civil+and+Environmental+Engineering%22">Civil and Environmental Engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Water+Resource+Management%22">Water Resource Management</searchLink>
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  Data: The Chehalis River Basin is located in the southwest region of Washington State, originating in the Olympic Mountains and flowing to Grays Harbor and the Pacific Ocean. The Chehalis River is over 125 miles, exists within five counties, and flows through agricultural, residential, industrial, and forest land areas. Four major rivers discharge to the Chehalis River, as well as many smaller creeks, five wastewater treatment plants, and groundwater flows. Flooding is a major problem in the relatively flat areas surrounding the cities of Chehalis and Centralia, with severe consequences for property, safety and transportation. As a result, construction of a flood-control dam in the upper basin has been proposed. One major concern of constructing a dam is the potentially severe impacts to fish health and habitat. The Chehalis River has routinely violated water quality standards for primarily temperature and dissolved oxygen, and has had multiple water quality and Total Maximum Daily Load studies beginning in 1990. CE-QUAL-W2, a two-dimensional (longitudinal and vertical) hydrodynamic and water quality model, was used to simulate the Chehalis River, including free flowing river stretches and stratified (in summer) lake-like stretches. The goals of this research were to assess the flood retention structure's impacts to water quality, as well as river responses to potential climate change scenarios. In order to use the model to achieve these goals, calibration to field data for flow, temperature, and water quality constituents was performed. This involved developing meteorological data, riparian shading data, and flow, temperature, water quality records for all tributaries during the calibration period of January 1, 2013 to December 31, 2014. System cross-sectional geometry data were also required for the model grid. Because of the short travel time in the river, the model was sensitive to boundary condition data, wind speed, bathymetry, nutrient kinetics, and algae, epiphyton, and zooplankton kinetics. Future conditions ...
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  Data: In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
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    Subjects:
      – SubjectFull: Flood control -- Environmental aspects -- Washington (State) -- Chehalis River
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      – SubjectFull: Hydrodynamics -- Mathematical models -- Case studies
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      – SubjectFull: Dams -- Environmental aspects -- Washington (State) -- Chehalis River
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      – SubjectFull: Floodplain management -- Washington (State) -- Chehalis River Watershed
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      – SubjectFull: Water Resource Management
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