Come join us for the last Brownbag of the quarter! Dwayne Meadows, Trout Unlimited's Bristol Bay National Outreach Director, will speak about defining the Clean Water Act to protect Amercia's largest wild salmon run. The talk will cover both the need for science, economincs, and politics at the local and national level to not only protect Bristol Bay, but to continue to define the 40 year old Clean Water Act. Please come support our invited speaker and enjoy an informal discussion May 23rd from noon - 1pm in Richardson Hall 115. Bring a lunch!

This seminar can be viewed on the OSU campus (Kidder 202) or live online: http://live.oregonstate.edu .  If you join online, please sign in to the chat window with: First Name_Last Name_OrganizationAbbreviation so you can ask questions during and after the seminar and we can track who is watching online.  You will need to use underscores rather than spaces when you sign in and there is a limit of about 30 characters.

This seminar is sponsored by the Willamette Water 2100 Project, a project evaluating how climate change, population growth, and economic growth will change the availability and the use of water in the Willamette River Basin (WRB) on a decadal to centennial timescale. 

Abstract:

A study by Oregon DEQ and the Corps of Engineers led to the development of a dynamic hydrodynamic and water quality model of the entire Willamette River basin in Oregon. This model development, in the first phase, was used to set a temperature TMDL for the Willamette system. The Corps of Engineers dynamic 2-D model CE-QUAL-W2 Version 3.1 was applied to the Willamette River basin. The study area, as shown in Figure 1, includes about 600 miles of river. The model domain includes the mainstem Willamette River, the North and South Santiam Rivers (performed by USGS and DEQ), the Long Tom River, the McKenzie River and the Coast and Middle Forks of the Willamette River. The model domain also includes about 70 miles of the Columbia River since it affects the tidally influenced part of the lower Willamette basin.

The study included constructing the model grid and developing dynamic boundary conditions for the system model. The model calibration included model-data comparisons of flow rates at gaging stations, dye study travel times performed throughout the basin, water levels at gaging stations, and continuous temperature data at dozens of locations.

The model was then used to evaluate the temperature impacts of stream shading, different flow management practices from storage reservoirs in the headwaters of the Willamette, and the impact of point source discharges (primarily wastewater treatment plants, pulp and paper mills, and various industries). How these tools will be used in the Willamette 2100 project will be discussed. The model changes include around upgrading the models, simplifying the grids, and using steady-state river hydraulics.

In addition the Corps of Engineers and the USGS have developed some reservoir models for the basin. The development of these models and how they will be used in the Willamette 2100 project will be discussed. Comparisons will be shown of the original models and the simplified models and how these reduce critical computational time for the Envision framework.

http://groups.oregonstate.edu/hydro/spring-2013-water-resources-seminar-series

Schedule as of 2/28/13:

• Apr 3 - Julia Jones, Oregon State University - Climate and streamflow trends in the Columbia River basin: evidence for ecological and engineering resilience to climate change
• Apr 10 - Kamini Singha, Colorado School of Mines
• Apr 17 - Philip Hirsch, The University of Sydney
• Apr 24 - David Goodrich, USDA—ARS Reducing the Uncertainty of Key Water Balance Components at the Basin Scale to aid Watershed Management
• May 1 - Gaby Katul, Duke University
• May 8 - Christopher Duffy, Pennsylvania State University
• May 15 - Bayani Cardenas, University of Texas at Austin Coupled processes along the surface watergroundwater interface: advances from modeling and measurements
• May 22 - Dennis Baldocchi, University of California-Berkeley Savannah Water Flux at the Global Scale
• May 29 - Richard Snyder, University of California-Davis
• June 5 - TBA

http://groups.oregonstate.edu/hydro/spring-2013-water-resources-seminar-series

Schedule as of 2/28/13:

• Apr 3 - Julia Jones, Oregon State University - Climate and streamflow trends in the Columbia River basin: evidence for ecological and engineering resilience to climate change
• Apr 10 - Kamini Singha, Colorado School of Mines
• Apr 17 - Philip Hirsch, The University of Sydney
• Apr 24 - David Goodrich, USDA—ARS Reducing the Uncertainty of Key Water Balance Components at the Basin Scale to aid Watershed Management
• May 1 - Gaby Katul, Duke University
• May 8 - Christopher Duffy, Pennsylvania State University
• May 15 - Bayani Cardenas, University of Texas at Austin Coupled processes along the surface watergroundwater interface: advances from modeling and measurements
• May 22 - Dennis Baldocchi, University of California-Berkeley Savannah Water Flux at the Global Scale
• May 29 - Richard Snyder, University of California-Davis
• June 5 - TBA

http://groups.oregonstate.edu/hydro/spring-2013-water-resources-seminar-series

Schedule as of 2/28/13:

• Apr 3 - Julia Jones, Oregon State University - Climate and streamflow trends in the Columbia River basin: evidence for ecological and engineering resilience to climate change
• Apr 10 - Kamini Singha, Colorado School of Mines
• Apr 17 - Philip Hirsch, The University of Sydney
• Apr 24 - David Goodrich, USDA—ARS Reducing the Uncertainty of Key Water Balance Components at the Basin Scale to aid Watershed Management
• May 1 - Gaby Katul, Duke University
• May 8 - Christopher Duffy, Pennsylvania State University
• May 15 - Bayani Cardenas, University of Texas at Austin Coupled processes along the surface watergroundwater interface: advances from modeling and measurements
• May 22 - Dennis Baldocchi, University of California-Berkeley Savannah Water Flux at the Global Scale
• May 29 - Richard Snyder, University of California-Davis
• June 5 - TBA

http://groups.oregonstate.edu/hydro/spring-2013-water-resources-seminar-series

Schedule as of 2/28/13:

• Apr 3 - Julia Jones, Oregon State University - Climate and streamflow trends in the Columbia River basin: evidence for ecological and engineering resilience to climate change
• Apr 10 - Kamini Singha, Colorado School of Mines
• Apr 17 - Philip Hirsch, The University of Sydney
• Apr 24 - David Goodrich, USDA—ARS Reducing the Uncertainty of Key Water Balance Components at the Basin Scale to aid Watershed Management
• May 1 - Gaby Katul, Duke University
• May 8 - Christopher Duffy, Pennsylvania State University
• May 15 - Bayani Cardenas, University of Texas at Austin Coupled processes along the surface watergroundwater interface: advances from modeling and measurements
• May 22 - Dennis Baldocchi, University of California-Berkeley Savannah Water Flux at the Global Scale
• May 29 - Richard Snyder, University of California-Davis
• June 5 - TBA

http://groups.oregonstate.edu/hydro/spring-2013-water-resources-seminar-series

Schedule as of 2/28/13:

• Apr 3 - Julia Jones, Oregon State University - Climate and streamflow trends in the Columbia River basin: evidence for ecological and engineering resilience to climate change
• Apr 10 - Kamini Singha, Colorado School of Mines
• Apr 17 - Philip Hirsch, The University of Sydney
• Apr 24 - David Goodrich, USDA—ARS Reducing the Uncertainty of Key Water Balance Components at the Basin Scale to aid Watershed Management
• May 1 - Gaby Katul, Duke University
• May 8 - Christopher Duffy, Pennsylvania State University
• May 15 - Bayani Cardenas, University of Texas at Austin Coupled processes along the surface watergroundwater interface: advances from modeling and measurements
• May 22 - Dennis Baldocchi, University of California-Berkeley Savannah Water Flux at the Global Scale
• May 29 - Richard Snyder, University of California-Davis
• June 5 - TBA