Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon and Summer Steelhead In The Grande Ronde River Subbasin - Annual Report 2011

Identification Information

Citation

Originator: Favrot, S. D., J. M. Whitty, M. P. Ticus, A. B. Garner, B. C. Jonasson, R. W. Carmichael

Publish Date: 2012

Online Link: https://www.cbfish.org/Document.mvc/Viewer/P128637

BPA Project #: 1992-026-04

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Edwin (Ted) Sedell

Job Position: Project Leader

Telephone: 541-962-3954

E-Mail Address: Edwin.R.Sedell@odfw.oregon.gov

Description

Abstract: This study was designed to document and describe status and life history strategies of spring Chinook salmon and summer steelhead in Grande Ronde River Subbasin. We determined migration timing, abundance and life-stage survival rates for juvenile spring Chinook salmon Oncorhynchus tshawytscha and summer steelhead O. mykiss at four trap locations during migratory year 2011 (MY11) from 1 July 2010 through 30 June 2011. Similar to previous years, spring Chinook salmon and steelhead exhibited fall and spring movements from natal rearing areas, but did not begin smolt migration through the Snake and main stem Columbia River hydrosystem until spring 2011. In this report, we provide estimates of migrant abundance and migration timing for each study stream, and survival and migration timing to Lower Granite Dam. We also document aquatic habitat conditions using water temperature and discharge at five trap locations within the subbasin. ODFW, Eastern Oregon Fish Research (EOFR)

Purpose: 1) Document in-basin migration patterns and estimate abundance of spring Chinook salmon juveniles in Catherine Creek and the Lostine, middle Grande Ronde, Minam, and upper Grande Ronde rivers. 2) Determine overwinter mortality and relative success of fall (early) and spring (late) migrant life history strategies for spring Chinook salmon from tributary populations in Catherine Creek and the Lostine and upper Grande Ronde rivers, and relative success of fall (early) and spring (late) migrant life history strategies for spring Chinook salmon from Minam River. 3) Estimate and compare smolt survival probabilities at main stem Columbia and Snake River dams for migrants from five natural populations of spring Chinook salmon in the Grande Ronde and Imnaha river subbasins. 4) Document annual migration patterns for spring Chinook salmon juveniles from five natural populations in Grande Ronde and Imnaha river subbasins: Catherine Creek and Imnaha, Lostine, Minam, and upper Grande Ronde rivers. 5) Document patterns of movement and estimate abundance of juvenile steelhead from populations in Catherine Creek and the Lostine, middle Grande Ronde, Minam, and upper Grande Ronde rivers. 6) Estimate and compare survival probabilities to main stem Columbia and Snake River dams for summer steelhead from five populations: Catherine Creek and the Lostine, middle Grande Ronde, Minam, and upper Grande Ronde rivers. 7) Describe aquatic habitat conditions, using water temperature and discharge, in Catherine Creek and the Lostine, middle Grande Ronde, Minam, and upper Grande Ronde rivers.

Time Period of Content: 2010-2011

Geographic Extent: Grande Ronde River basin, including Catherine Creek and the Upper Grande Ronde, Minam, and Lostine rivers.

Status: Final

Use Constraints:

Format: pdf

Data Quality Information

Lineage-Source:

Data Information

Population	Indicators	Metrics
Catherine Creek Spring Chinook	Juvenile outmigrant abundance; Presmolt abundance	Age proportion; Survival rate; Total smolt outmigration
Minam River Spring Chinook	Juvenile outmigrant abundance; Presmolt abundance	Age proportion; Survival rate; Total smolt outmigration
Upper Grande Ronde Spring Chinook	Juvenile outmigrant abundance; Presmolt abundance	Age proportion; Survival rate; Total smolt outmigration
Upper Grande Ronde Summer Steelhead	None selected	Survival rate
Wallowa/Lostine River Spring Chinook	Juvenile outmigrant abundance; Presmolt abundance	Age proportion; Survival rate; Total smolt outmigration

Entity and Attribute Information

Attributes Description: Field attribute information is available in the attached file(s).

Is a physical copy maintained for reference at Headquarters? Unknown