NF - Movement of Juvenile Redband Trout from Spencer Creek, Klamath River in 2004: Preliminary Findings - Annual Report

Identification Information

Citation

Originator: Teri Moore?

Publish Date: 2004

Online Link: http://nrimp.dfw.state.or.us/crl/Reports/NF/Spencer_Redband_2004.pdf

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Steve Jacobs

Job Position: Project Leader

Telephone: (541)757-4263 x261

E-Mail Address: steve.jacobs@oregonstate.edu

Description

Abstract: Spencer Creek is a major spawning area and recruitment source of redband trout in the upper Klamath River. The confluence of Spencer Creek and the Klamath River is 1.5 km upstream of J.C. Boyle dam, which was built in 1959. Past studies provide evidence of a dramatic decline in adult upstream passage since the dam was built and relatively little juvenile downstream passage. However, sampling efforts to quantify the magnitude and extent of movements by juveniles to locations downstream of the dam were limited in scope. Operation of J.C. Boyle Dam may reduce the likelihood that juvenile redband trout from Spencer Creek can move downstream past the dam safely and efficiently and may reduce adult upstream passage to Spencer Creek. In order to understand better juvenile and adult redband trout life history and evaluate fish passage over J.C. Boyle dam, Native Fish Investigations Project plans to monitor redband trout movement in Spencer Creek and the upper Klamath River during 2004 and 2005. We plan to capture juvenile trout (>90 mm) as they emigrate from Spencer Creek and tag them with inter-peritoneal radio transmitters (NanoTags, Lotek Wireless). Adults, upstream and downstream of the dam, will also be radio tagged. Movements of radio-tagged fish will be monitored using fixed-station receivers at locations associated with hydropower facilities and mobile receivers in free-flowing reaches. In addition, we plan to mark several hundred outmigrating juvenile trout (>70mm) in Spencer Creek, and 50 adult trout in the Klamath River, with passive integrated transponder (PIT) tags and install PIT-tag receiver stations at the mouth of Spencer Creek and downstream of J.C. Boyle Dam.

Purpose: Study Objective: Determine migratory patterns of juvenile redband trout originating from Spencer Creek through J. C. Boyle Dam and Hydropower Complex.

Time Period of Content: 2004 Annual Report

Geographic Extent: Spencer Creek, Klamath River

Status: Final

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Format: PDF File

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Is a physical copy maintained for reference at Headquarters? Unknown