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Title: Monitoring the Migrations of Wild Snake River Spring and Summer Chinook Salmon Smolts, 1992 Annual Report.

Abstract

We PIT tagged wild spring and summer chinook salmon parr in the Snake River Basin in 1991, and subsequently monitored these fish during their smolt migration through Lower Granite, Little Goose, and McNary Dams during spring and summer 1992. This report details our findings.

Authors:
; ;  [1]
  1. (Northwest and Alaska Fisheries Center, Coastal Zone and Estuarine Division, Seattle, WA)
Publication Date:
Research Org.:
Northwest and Alaska Fisheries Science Center
Sponsoring Org.:
United States. Bonneville Power Administration.
OSTI Identifier:
200688
Report Number(s):
DOE/BP-18800-1
ON: DE95014447
DOE Contract Number:
1991BP18800
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Sep 1994
Country of Publication:
United States
Language:
English
Subject:
13 HYDRO ENERGY; 54 ENVIRONMENTAL SCIENCES; SALMON; MIGRATION; MONITORING; SEASONAL VARIATIONS; HYDROELECTRIC POWER PLANTS; SAMPLING; Chinook salmon - Migration - Snake River Watershed (Wyo.-Wash.)

Citation Formats

Achord, Stephen, Marsh, Douglas M., and Kamikawa, Daniel J. Monitoring the Migrations of Wild Snake River Spring and Summer Chinook Salmon Smolts, 1992 Annual Report.. United States: N. p., 1994. Web. doi:10.2172/200688.
Achord, Stephen, Marsh, Douglas M., & Kamikawa, Daniel J. Monitoring the Migrations of Wild Snake River Spring and Summer Chinook Salmon Smolts, 1992 Annual Report.. United States. doi:10.2172/200688.
Achord, Stephen, Marsh, Douglas M., and Kamikawa, Daniel J. Thu . "Monitoring the Migrations of Wild Snake River Spring and Summer Chinook Salmon Smolts, 1992 Annual Report.". United States. doi:10.2172/200688. https://www.osti.gov/servlets/purl/200688.
@article{osti_200688,
title = {Monitoring the Migrations of Wild Snake River Spring and Summer Chinook Salmon Smolts, 1992 Annual Report.},
author = {Achord, Stephen and Marsh, Douglas M. and Kamikawa, Daniel J.},
abstractNote = {We PIT tagged wild spring and summer chinook salmon parr in the Snake River Basin in 1991, and subsequently monitored these fish during their smolt migration through Lower Granite, Little Goose, and McNary Dams during spring and summer 1992. This report details our findings.},
doi = {10.2172/200688},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 1994},
month = {Thu Sep 01 00:00:00 EDT 1994}
}

Technical Report:

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  • The goals of this study are to (1) characterize the outmigration timing of different wild stocks of spring/summer chinook salmon smolts at dams on the Snake and Columbia Rivers, (2) determine if consistent patterns are apparent, and (3) determine what environmental factors influence outmigration timing. The authors PIT tagged wild spring/summer chinook salmon parr in the Snake River Basin in 1993, and subsequently monitored these fish during their smolt migration through Lower Granite, Little Goose, Lower Monumental, and McNary Dams during spring, summer, and fall 1994. This report details their findings.
  • We PIT tagged wild spring/summer chinook-salmon parr in the Snake River Basin in 1994 and subsequently monitored these fish during their smolt migration through Lower Granite, Little Goose, Lower Monumental, McNary, John Day, and Bonneville Darns during spring, summer, and fall 1995. This report details our findings. The goals of this study are to (1) characterize the migration timing of different wild stocks of Snake River spring/summer chinook salmon smolts at dams on the Snake and Columbia Rivers, (2) determine if consistent patterns are apparent, and (3) determine what environmental factors influence migration timing.
  • We PIT tagged wild spring/summer chinook salmon parr in the Snake River Basin in 1995 and subsequently monitored these fish during their smolt migration through Lower Granite, Little Goose, Lower Monumental, McNary, John Day, and Bonneville Dams during spring and summer 1996.
  • This reports details the 1998 study results from an ongoing project to monitor the migration behavior of wild spring/summer chinook salmon smolts in the Snake River Basin. The report also discusses trends observed in the cumulative data resulting from this project; data has been collected from Oregon and Idaho streams since 1989. The project was initiated after 3 years of detection data from PIT-tags (passive-integrated-transponder tags) had shown distinct differences in migration patterns between wild and hatchery fish. Data showing these patterns had originated from tagging and interrogation operations begun in 1988 to evaluate a smolt transportation program conducted bymore » the National Marine Fisheries Service (NMFS) for the US Army Corps of Engineers. In 1991, the Bonneville Power Administration began a cooperative effort with NMFS to expand tagging and interrogation of wild fish for this project. Project goals were to characterize the outmigration timing of these fish, to determine whether consistent migration patterns would emerge, and to investigate the influence of environmental factors on the timing and distribution of these migrations. In 1992, the Oregon Department of Fish and Wildlife (ODFW) began an independent program of PIT tagging wild chinook salmon parr in the Grande Ronde and Imnaha River Basins in northeast Oregon. Since then, ODFW has reported all tagging, detection, and timing information on fish from these streams. However, with ODFW concurrence, NMFS will continue to report arrival timing of these fish at Lower Granite Dam. We continued to tag fish from Idaho in all years subsequent to 1992. Principal results from our tagging and interrogation efforts during 1997-1998 are given.« less
  • In August 1996, we PIT tagged and released 1,360 wild chinook salmon parr in the South Fork of the Salmon River and two of its tributaries in Idaho. During spring and summer 1997, the overall adjusted percentage of PIT-tagged fish from Idaho detected at six downstream dams averaged 18.3% (range 16.0 to 27.3% depending on stream of origin). Peak detections of all wild spring/summer chinook salmon smolts (from Idaho and Oregon) at Lower Granite Dam occurred during variable but increasing river flows in April. High river flows from mid-April to mid-May moved most of these fish through Lower Granite Dam,more » with 50 and 90% passage occurring on 24 April and 21 May, respectively. From 1989 to 1996, peak detections of wild spring/summer chinook salmon smolts were highly variable and generally independent of river flows before about 9 May at this dam; however, during these years (including 1997), peak detections of wild fish coincided with periods of peak flow at the dam from 9 May to the end of May. In both 1995 and 1996, in excess of 90% of the wild fish had migrated past Lower Granite Dam by the time peak flows occurred in June. In 1989, we observed a period of peak detections of wild fish that coincided with peak flows at the dam in June. After examining chinook salmon smolt passage timing at the dams over the last 9 years, it has become clear that flow is only one of several factors that influence passage timing. Other factors, such as annual climatic conditions, water temperature, turbidity, physiological development, variability in stock behavior, fish size, and other yet unknown conditions may equally affect wild smolt passage timing at dams. As additional environmental monitors and traps are installed in study streams, we will be able to more accurately monitor parr and smolt movements out of rearing areas and examine the relationships of these movements to environmental parameters within the streams. Mapped over time, this information will provide the basis for accurately predicting the migrational timing of different wild stocks as they migrate downstream through the hydropower system.« less