Lower Snake River Compensation Plan Oregon Evaluation Studies 1997 and 1998 Bi-Annual Progress Report, January 1, 1997 through December 31, 1998

Identification Information

Citation

Originator: Hoffnagle, T.L., R.W. Carmichael, D.L. Eddy, P.J. Keniry, F.R. Monzyk and G. Vonderohe

Publish Date: July 2005

Online Link: None

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Cedric Cooney

Job Position: Natural Resources Data and Systems Manager

Telephone: 503-947-6094

E-Mail Address: cedric.x.cooney@odfw.oregon.gov

Description

Abstract: The purpose of this progress report is to provide summary information for spring Chinook salmon Lower Snake River Compensation Plan (LSRCP) programs operated by ODFW in the Grande Ronde and Imnaha river basins during 1997 and 1998. These ongoing monitoring programs provide technical, logistical and biological information to managers charged with maintaining viable salmon populations and associated fisheries in northeast Oregon. The data in this report serve as the basis for the analysis of trends in culture performance and were derived from hatchery inventories and standard databases (i.e., PSMFC, coded-wire tag) or through standard measuring techniques. As such, specific protocols are usually not described. In cases where expansions of data or unique methodologies were used, protocols are described in more detail. Additional descriptions of protocols can be found in the 1997 and 1998 work statements (Carmichael 1989; Carmichael et al 1997; 1998). Coded-wire tag (CWT) data collected from 1997-1998 adult returns are used to evaluate smolt-to-adult survival rates in experimental rearing and release groups. In 1997-1998, experimental treatments from which salmon returned included acclimated vs. direct stream release, size at release and rearing density. In 1997-1998, experimental treatments for which salmon were released included size at release, presmolt exercise and rearing density treatments. Analysis of specific survival studies will be completed once all brood years have returned and CWT data are complete for a given experiment. In addition, much of the data that we discuss in this report will be used in separate and specific evaluations of ongoing supplementation programs for Chinook salmon in the Imnaha River Basin. We began culture evaluations in 1983 and have dramatically improved many practices. Progress for work completed in previous years is presented in annual progress reports (Carmichael and Wagner 1983; Carmichael and Messmer 1985; Carmichael et al 1986a 1987, 1988a, 1988b, 1989, 1990, 1999 and 2004; Messmer et al 1989, 1990, 1991, 1992 and 1993; Jonasson et al 1994, 1995 and 1996) and United States v. Oregon production report (Carmichael et al 1986b ). Within each section of this report, data are organized into salmon culture monitoring for juveniles, adults, CWT recoveries, compensation goals and estimates for total escapement. During the period covered in this report, Chinook salmon from the 1991-1995 brood years returned to spawn, Chinook salmon from the 1995-1996 brood year were released as smolts and adult Chinook salmon that returned to spawn were used to create the 1997 and 1998 cohorts.

Purpose:

Time Period of Content: 1997-1998

Geographic Extent: Grande Ronde and Imnaha River Basins

Status: Final

Use Constraints:

Format: PDF File

Data Quality Information

Lineage-Source:

Data Information

No data information was supplied.

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? No