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Annual progress report (2002) and data for Cook et al. 2003. Numerically Simulating the Hydrodynamic and Water Quality Environment for Migrating Salmon in the Lower Snake River. Annual progress report for 2002 for BPA Project 2002-027-00, Contract No. 00000652-12.

Data Categories Bathymetry, water temperature, ADCP (acoustic Doppler current profiler), hydrodynamic modeling, CFD modeling.
Dates of Data Data 2002;Reports 2003 TO Data 2004; Reports 2006
Data Set Status Complete
Data Set Update Schedule n/a
Date Data Set Published on StreamNet Data Store 3/25/2011
Project Name & Number BPA Project # 2002-027-00
Purpose of Data Set Purpose provided in Abstract
Summary / Abstract Summer temperatures in the Lower Snake River can be altered by releasing cold waters that originate from deep depths within Dworshak Reservoir. These cold releases are used to lower temperatures in the Clearwater and Lower Snake Rivers and to improve hydrodynamic and water quality conditions for migrating aquatic species. This project monitored the complex three-dimensional hydrodynamic and thermal conditions at the Clearwater and Snake River confluence and the processes that led to stratification of Lower Granite Reservoir (LGR) during the late spring, summer, and fall of 2002. Hydrodynamic, water quality, and meteorological conditions around the reservoir were monitored at frequent intervals, and this effort continued in 2004. Monitoring of the reservoir is a multi-year endeavor, and this report spans only the first year of data collection.

In addition to monitoring the LGR environment, a three-dimensional hydrodynamic and water quality model has been applied. This model uses field data as boundary conditions and has been applied to the entire 2002 field season. Numerous data collection sites were within the model domain and serve as both calibration and validation locations for the numerical model. Errors between observed and simulated data varied in magnitude from location to location and from one time to another. Generally, errors were small and within expected ranges, although, as additional 2003 field data become available, model parameters may be improved to minimize differences between observed and simulated values.

A two-dimensional, laterally-averaged hydrodynamic and water quality model was applied to the three reservoirs downstream of LGR (the pools behind Little Goose, Lower Monumental, and Ice Harbor Dams). A two-dimensional model is appropriate for these reservoirs because observed lateral thermal variations during summer and fall 2002 were almost negligible; however, vertical thermal variations were quite large (see USACE 2003). The numerical model was applied to each reservoir independently to simulate the time period between May 1 and October 1, 2002. Differences between observed and simulated data were small, although improvements to model coefficients may be performed as additional thermal data, collected in the reservoirs during 2003, become available.
Broad Biological Groups n/a
Taxa n/a
Location Lower Granite Reservoir
Snake River, Clearwater River
Asotin County, Washington
Nez Perce County, Idaho
NPCC Subbasins (2001 Subbasins) Columbia Plateau: Snake lower

Dams Lower Granite Dam
Keywords flow patterns, water density, mixing, temperature, model
Lead Person and Organization That Created the Data Set Chris Cook
Other Participating Organizations Pacific Northwest National Laboratory (PNNL), Operated by Battelle for the US Department of Energy
Contact Person for Questions About the Data Name:  Chris Cook
Position:  Senior Research Engineer
Organization:  Pacific Northwest National Laboratory
Address:  Hydrology Group MSIN K9-33 PO Box 999 Pacific Northwest National Laboratory
Richland, WA  99352
Phone:  509-375-6878
email:  Send a note to addressed for chris.cook.
Broad Category of Methods Field
Data Collection Methods Acoustic Doppler current profiler, self-contained temperature loggers, GPS, meteorological station, numerical models
File Formats scii text (.txt);
Microsoft Word (.doc);
Microsoft Excel (.xls);
Microsoft Powerpoint (.ppt);
Adobe Acrobat (.pdf);
Image files (.png)
Data structure description See data set files
URL where updated data may be available
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Papers, reports, and presentations that were done under this project. Cook, C.B., B. Dibrani, M.C., Richmond, M.D. Bleich, P.S. Titzler, and T. Fu. 2006. Hydraulic Characteristics of
the Lower Snake River During Periods of Juvenile Fall Chinook Salmon Migration. 2002-2006
Final Report for Project No. 200202700. 176 pages. (BPA Report DOE/BP-00000652-29)

Cook, C.B., C.L. Rakowski, M.C. Richmond, S.P. Titzler, A.M. Coleman, and M.D. Bleich. 2003. Numerically Simulating the Hydrodynamic and Water Quality Environment for Migrating Salmon in the Lower Snake River. Year 1 annual progress report for the Bonneville Power Administration, U.S. Department of Energy, under contract DE-AC06-76RLO1830.
Restrictions or legal prerequisites for accessing and using this data set. No

File Size: 51 MB