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Welcome
to the Portland State University (PSU), Department of Civil and Environmental
Engineering. This research group is comprised of a faculty, staff and
graduate students at PSU led by Dr. Scott Wells. The primary focus of this
group is to further the development of the CE-QUAL-W2 model, and to apply the
model to various water systems. The ModelCE-QUAL-W2 is a 2-D (longitudinal-vertical), water
quality and hydrodynamic model for rivers, estuaries, lakes, and reservoirs.
W2 models basic eutrophication processes such as
temperature-nutrient-algae-dissolved oxygen-organic matter and sediment
relationships. Additional model features include: Longitudinal-vertical
hydrodynamics and water quality in stratified and non-stratified systems,
multiple algae, epiphyton/periphyton, CBOD, and generic water quality groups,
internal dynamic pipe/culvert model, hydraulic structures (weirs, spillways)
algorithms including for submerged and 2-way flow over submerged hydraulic
structures, dynamic shading algorithm based on topographic and vegetative
cover. This model is supported
by Tom Cole at the Corps of Engineers, Waterways Experiments Station,
Vicksburg, MS. The current model release enhancements have been developed
under research contracts between the Corps and Portland State University
under supervision of Dr. Scott Wells. The current model release is Version
3.1 and includes executables, source codes, and examples for the W2 V3.1
model and preprocessor. There is also a stand-alone V3.1 GUI preprocessor
available. Downloads
can be found under the Links section of this page. Current Projects
Lower
Willamette River, mainstem (including part of the Lower Columbia River), OR - This
model will be used to assist the Oregon Department of Environmental Quality
in developing a temperature TMDL for the Willamette mainstem system of
rivers. This involves modeling 600 miles of river. Funding: Corps of
Engineers and Oregon DEQ. Bull
Run Watershed, OR – This model was developed for the river below the drinking water
reservoirs to develop a streambed-heating algorithm for CE-QUAL-W2. The goal is improve the model’s
ability to simulate stream temperatures under extremely low flow conditions.
Funding: COP Water Bureau. Spokane River, WA – The CE-QUAL-W2 model
has been applied to the Spokane River from the Idaho-Washington State border
to the outlet to Long Lake.
Work elements were performed by the Corps of Engineers, Waterways
Experiment Station (WES), Vicksburg, MS, and the Department of Civil and
Environmental Engineering, Portland State University. The model was developed and
calibrated to field data for 1991, 2000 and 2001. Funding has been from EPA
(Region X), Corps of Engineers, and Washington Ecology. Columbia
Slough, OR – The Columbia Slough is a 19-mile long water system of lakes,
channels, and wetlands and provides drainage to approximately 40,000 acres of
land. This model is used to view the effects of sewer overflows, storm water,
and ground water inflows on water quality. Funding: Oregon DEQ and COP BES. Green
River, WA– The tidal river going into Damamish Estuary goes through an
industrial section of metropolitan Seattle. A model is being developed for
about 45 miles of river for all eutrophication water quality parameters.
Funding: King County, Seattle. Laurance
Lake, OR – A high altitude lake at the base of Mt. Hood supports Bull Trout.
This study is dealing with temperature modeling of a stratified reservoir and
how temperatures below the dam can be improved to improve fish habitat.
Funding: Middle Fork Irrigation District. CE-QUAL-W2 Model Code Development – Funding: Waterways
Experiments Station, Corps of Engineers, Vicksburg, MS Stream Bed Temperature Heating Project – Funding: USGS. |
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