PSMFC Homepage


Add Your Data Set

Use our Data Publishing Service to add your data set to the Data Store.

The StreamNet Data Store is a searchable archive of data sets related to fish and other aquatic resources that are not of the specific data types included in the main StreamNet database. These data sets come from many different sources and are provided for download in their original formats. To add your own data set to the Data Store, use our Data Publishing Service.

StreamNet did not participate in creation of most of these data sets, and we are not able to answer questions about those we did not help develop. For questions about the data sets available from this page, please contact the originator of the particular data set.

To search the Data Store, enter key words, project numbers, species, methods, etc. into the search box below and click "Search".

File Size: 4 MB

Download this data set here:
HTTP url:

Smallmouth Bass catch, diet, and consumption data in Lower Granite Reservoir, 2016-2018

Data Categories The data set is divided into three categories. First is catch data. This summarizes the catch of bass at each sample site along with pertinent environmental data. Second is diet data. This summarizes all the prey found in bass stomachs. Third, is the consumption data. This uses the site and diet data to estimate consumption and loss of juvenile Chinook salmon to bass predation.
Dates of Data 2016 TO 2018
Data Set Status Complete
Data Set Update Schedule Complete.
Date Data Set Published on StreamNet Data Store 04-04-2019
Project Name & Number Bonneville Power Administration, Project 2002-032-00
Purpose of Data Set The purpose of this data was to estimate the seasonal loss of subyearling fall Chinook salmon to smallmouth bass in Lower Granite Reservoir.
Summary / Abstract The data set contains smallmouth bass catch, diet, and consumption data that was collected from April-June in Lower Granite Reservoir on the Snake River, 2016-2018. The data set contains everything necessary to estimate empirical consumption of juvenile Chinook salmon, smallmouth bass abundance, and predation loss of Chinook salmon during the study periods.
Broad Biological Groups Fishes, invertebrates
Taxa Smallmouth bass (Micropterus dolomieux)
Chinook salmon (Onchorhynchus tshawytscha)
Sand roller (Percopsis transmontana)
Location Lower Granite Reservoir, Snake River. River kilometers 173-220, as measured from the mouth of the Snake River.
NPCC Subbasins (2001 Subbasins) Middle Snake: Snake lower middle
Dams Lower Granite Dam
Keywords Predation, smallmouth bass, Chinook salmon, Snake River, Lower Granite Reservoir
Lead Person and Organization That Created the Data Set Ken Tiffan
Other Participating Organizations None
Contact Person for Questions About the Data Name:  Ken Tiffan
Organization:  U.S. Geological Survey
Address:  5501A Cook-Underwood Rd.
Cook, WA  98605
Phone:  509-538-2972
Broad Category of Methods Field and Lab
Data Collection Methods Smallmouth bass were collected using boat electrofishing. Diet data were collected using non-lethal stomach lavage on bass.
File Formats Microsoft Excel 2000 or later.
Data structure description The data are contained in an Excel spreadsheet that has 4 sheets. The first sheet is called "Column Definitions." It contains a description of each column in each sheet. They are organized by sheet. The second sheet is called "Site Data." This sheet contains all catch information, environmental data, and also final estimates of abundance, consumption, and loss of Chinook and sand rollers. The third sheet is called "Field Data." It contains many of the variables used to calculate consumption rates. The fourth data sheet is called "Lab Data." This contains all the diet data from smallmouth bass. It included taxon number and wet weight. Note: this is a complicated data set. To fully understand the analysis methods that produced the data and the study design, it is important to contact the data set creator - Ken Tiffan.
URL where updated data may be available
Some data sets are intrinsically linked to software, tools, models, or statistical procedures, and must be used in association in order to be of value. If this applies to this data set then the following information will apply:
Relationship between the data set and the software, model, etc. N/A
Where the software, tools, models, etc. can be obtained if they are not included with the data download. N/A
Contact person for questions about the software, tools, models, etc. Name:  

Papers, reports, and presentations that were done under this project. Erhardt, J.M., B.K. Bickford, R.J. Hemingway, T.N. Rhodes, and K.F. Tiffan. 2017. Snake River fall Chinook salmon life history investigations. 2016 Annual Report to the Bonneville Power Administration, Project 200203200, Contract Number 72252. 21 p.

Erhardt, J.M., R.J. Hemingway, K.F. Tiffan, P. Chittaro, B. Kennedy, and J. Hegg. 2018. Snake River fall Chinook salmon life history investigations. 2017 Annual Report to the Bonneville Power Administrations, Project 200203200, Contracts 75127, 46273 REL 12, and 72875. 95 p.
Restrictions or legal prerequisites for accessing and using this data set. No

File Size: 4 MB