Pick a query by clicking on a radio button or a transportation year.

Note: Click on the radio button even if it looks selected.

Current Year Queries and Reports

Current 2-week Gas Bubble Trauma (GBT) Summary
Current Year by Species Gas Bubble Trauma (GBT) Query

Historical Queries

1996 to 2010 GBT Data Query
1995 Historic GBT Data Query
1994 Historic GBT Data Query

Manuals, Metadata, & Program

GBT metadata protocols regarding annual differences
Gas Bubble Trauma Monitoring Protocol
Gas Bubble Trauma Data Entry Program (self extracting executable)


2011 GBT Monitoring Schedule

Site Days of Week Begin Date End Date
Bonneville Dam Tuesday, Saturday April 08 August 30
Little Goose Tuesday April 15 August 26
Lower Monumental Monday April 14 August 25
Lower Granite Monday April 08 June 30
McNary Dam - Spring* Alternating two days April 14 June 20 (approx.)
McNary Dam - Summer* Monday, Thursday June 19 August 28
Rock Island Dam Monday, Thursday April 24 August 28


* McNary will be in full bypass every other day during spring conditions and begin every day collection during summer-like conditions (approximately June 20).



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Page last updated on: January 27, 2011

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