Download or read book Behavior of Radio Tagged Juvenile Chinook Salmon and Steelhead and the Performance of a Removable Spillway Weir at Lower Granite Dam Washington 2002 written by and published by . This book was released on 2003 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Radio Tagged Juvenile Chinook Salmon and Steelhead and the Performance of a Removable Spillway Weir at Lower Granite Dam Washington 2002 Final July 2003 written by United States and published by . This book was released on 2003 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Radio tagged Juvenile Chinook Salmon and Steelhead and Performance of a Removable Spillway Weir at Lower Granite Dam Washington 2002 written by John M. Plumb and published by . This book was released on 2003 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior and Survival of Radio tagged Juvenile Chinook Salmon and Steelhead Relative to the Performance of a Removable Spillway Weir at Lower Granite Dam Washington 2003 written by John M. Plumb and published by . This book was released on 2004 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrodynamics and Juvenile Salmon Movement Behavior at Lower Granite Dam written by Richard Andrew Goodwin and published by . This book was released on 2003 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish and Wildlife Implementation Plan written by and published by . This book was released on 2003 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Radio Tagged Juvenile Chinook Salmon and Steelhead in the Forebay of Lower Granite Dam Relative to the 2000 Surface Bypass and Behavioral Guidance Structure Tests written by and published by . This book was released on 2002 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Radio tagged Juvenile Chinook Salmon and Steelhead in the Forebay of Lower Granite Dam Relative to the 2000 Surface Bypass and Behavioral Guidance Structure Tests written by John M. Plumb and published by . This book was released on 2002 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Migratory Behavior of Radio Tagged Juvenile Spring Chinook Salmon and Steelhead Through Lower Granite Dam and Reservoir During a Drought Year 2001 written by and published by . This book was released on 2001 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Passage Behavior and Survival for Radio tagged Yearling Chinook Salmon and Juvenile Steelhead at Lower Monumental Dam 2006 written by Eric E. Hockersmith and published by . This book was released on 2008 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Passage Behavior and Survival for Radio tagged Yearling Chinook Salmon and Juvenile Steelhead at Lower Monumental Dam 2007 written by Eric E. Hockersmith and published by . This book was released on 2008 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Passage Behavior and Survival for Radio tagged Yearling Chinook Salmon and Juvenile Steelhead at Lower Monumental Dam 2008 written by Eric E. Hockersmith and published by . This book was released on 2010 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Smolt Monitoring at the Head of Lower Granite Reservoir and Lower Granite Dam 2003 Annual Report written by and published by . This book was released on 2009 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project monitored the daily passage of Chinook salmon Oncorhynchus tshawytscha, steelhead trout O. mykiss, and sockeye salmon O. nerka smolts during the 2003 spring out-migration at migrant traps on the Snake River and Salmon River. In 2003 fish management agencies released significant numbers of hatchery Chinook salmon and steelhead trout above Lower Granite Dam that were not marked with a fin clip or coded-wire tag. Generally, these fish were distinguishable from wild fish by the occurrence of fin erosion. Total annual hatchery Chinook salmon catch at the Snake River trap was 2.1 times less in 2003 than in 2002. The wild Chinook catch was 1.1 times less than the previous year. Hatchery steelhead trout catch was 1.7 times less than in 2002. Wild steelhead trout catch was 2.1 times less than the previous year. The Snake River trap collected 579 age-0 Chinook salmon of unknown rearing. During 2003, the Snake River trap captured five hatchery and 13 wild/natural sockeye salmon and 36 coho salmon O. kisutch of unknown rearing. Differences in trap catch between years are due to fluctuations not only in smolt production, but also differences in trap efficiency and duration of trap operation associated with flow. The significant differences in catch between 2003 and the previous year were due mainly to low flows during much of the trapping season and then very high flows at the end of the season, which terminated the trapping season 12 days earlier than in 2002. Trap operations began on March 9 and were terminated on May 27. The trap was out of operation for a total of zero days due to mechanical failure or debris. Hatchery Chinook salmon catch at the Salmon River trap was 16.8% less and wild Chinook salmon catch was 1.7 times greater than in 2002. The hatchery steelhead trout collection in 2003 was 5.6% less than in 2002. Wild steelhead trout collection was 19.2% less than the previous year. Trap operations began on March 9 and were terminated on May 24 due to high flows. There were zero days when the trap was out of operation due to high flow or debris. The decrease in hatchery Chinook catch in 2003 was partially due to differences in flow between years because there was a 5.9% increase in hatchery production in the Salmon River drainage in 2003. The decrease in hatchery steelhead catch may be partially due to a 13% decrease in hatchery production in the Salmon River drainage in 2003. Travel time (d) and migration rate (km/d) through Lower Granite Reservoir for PIT-tagged Chinook salmon and steelhead trout marked at the Snake River trap were affected by discharge. Statistical analysis of 2003 data detected a relation between migration rate and discharge for wild Chinook salmon but was unable to detect a relation for hatchery Chinook. The inability to detect a migration rate discharge relation for hatchery Chinook was probably caused by age 0 fall Chinook being mixed in with the age 1 Chinook. Age 0 fall Chinook migrate much slower than age 1 Chinook, which would confuse the ability to detect the migration rate discharge relation. For wild Chinook salmon there was a 1.4-fold increase in migration rate, respectively, between 50 and 100 kcfs. For steelhead trout tagged at the Snake River trap, statistical analysis detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge. For hatchery and wild steelhead trout, there was a 1.7-fold and a 1.9-fold increase in migration rate, respectively, between 50 and 100 kcfs. Travel time and migration rate to Lower Granite Dam for fish marked at the Salmon River trap were calculated. Statistical analysis of the 2003 data detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge for hatchery Chinook salmon, wild Chinook salmon and hatchery steelhead trout. Not enough data were available to perform the analysis for wild steelhead trout. Migration rate increased 14-fold for hatchery Chinook salmon, 8.3-fold for wild Chinook salmon and 2.4-fold for hatchery steelhead as discharge increased between 50 kcfs and 100 kcfs. Fish tagged with passive integrated transponder (PIT) tags at the Snake River and Salmon River traps were interrogated at four dams with PIT tag detection systems (Lower Granite, Little Goose, Lower Monumental, and McNary dams). Because of the addition of the fourth interrogation site (Lower Monumental) in 1993 and the installation of the Removable Spillway Weir at Lower Granite Dam in 2001, caution must be used in comparing cumulative interrogation data. Cumulative interrogations at the four dams for fish marked at the Snake River trap were 65% for hatchery Chinook, 72% for wild Chinook, 66% for hatchery steelhead, and 67% for wild steelhead. Cumulative interrogations at the four dams for fish marked at the Salmon River trap were 48% for hatchery Chinook, 61% for wild Chinook salmon, 57% for hatchery steelhead trout, and 56% for wild steelhead trout.

Download or read book Passage Behavior of Radio tagged Yearling Chinook Salmon and Steelhead at Bonneville Dam 2002 written by Scott D. Evans and published by . This book was released on 2003 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Passage Behavior and Survival for Radio tagged Yearling Chinook Salmon and Juvenile Steelhead at Lower Monumental Dam 2009 written by Eric E. Hockersmith and published by . This book was released on 2010 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Movement Distribution and Behavior of Radio tagged Yearling Chinook Salmon and Juvenile Steelhead in the Forebay of Bonneville Dam 1998 written by Hal C. Hansel and published by . This book was released on 1998 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Fishway Modifications to Improve Passage of Adult Chinook Salmon and Steelhead Through the Transition Pool at Lower Granite Dam 2008 written by T. S. Clabough and published by . This book was released on 2009 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Previous studies of Pacific salmon migration behaviors at Snake River dams indicated slow passage at transition pools in adult fishways. In 2001 and 2002, we conducted an experiment to evaluate if modified weirs affected adult salmon and steelhead passage times and route selection through the Lower Granite Dam transition pool. Attraction flows through weir orifices were experimentally manipulated using removable aluminum panels. Results from the 2001-2002 studies indicated a greater percentage of radiotagged spring–summer Chinook salmon passed straight through the transition pool and median transition pool passage times were significantly lower when the panels were deployed. Based on these results, the U.S. Army Corps of Engineers modified the fish ladder at Lower Granite Dam in 2006 prior to the migration season. Modifications included narrowing the transition pool and increasing the weir crest height of the lowest eleven weirs. To evaluate the effectiveness of the modifications, we radio-tagged and monitored adult spring-summer and fall Chinook salmon and steelhead as they passed Little Goose and Lower Granite dams and compared their performance to that measured during previous years without modifications in place. Transition pool passage times at Lower Granite Dam for spring-summer Chinook salmon were significantly faster in 2006 than in 2003 and 2004 (non-modified years). Spring-summer Chinook salmon passage times were also faster in 2008, though the results were not statistically different (P > 0.05) than in 2003 and 2004. The other runs exhibited similar, though not statistically different responses. The frequencies of downstream exits from the Lower Granite transition pool to the tailrace for spring Chinook salmon in 2006 and 2008 were lower than in 2003 and 2004. We also compared the difference in passage times by individual fish at Little Goose and Lower Granite dams in an effort to statistically control for interannual variation in river environment. Comparisons of interannual differences in passage times at the two dams indicated that passage times decreased for individual fish at Lower Granite Dam compared to Little Goose dam in modified years compared to the non-modified years. Passage times through the Lower Granite transition pool were also faster in 2006 and 2008 than in 2003 and 2004. However, the transition pool passage times were not as low as those achieved during the experimental weir modifications in 2001 and 2002 and passage behavior only improved for spring-summer Chinook salmon during 2008 with the permanent modification. This difference may have been caused by differences in river conditions among years, differences in fishway hydraulics between the experimental and permanent modifications, or both."--Abstract (page iii).