Download or read book Migrational Characteristics of Spring Chinook Salmon and Steelhead Smolts in the Clearwater River and Lower Granite Reservoir written by Noah Swayambhu Adams and published by . This book was released on 1994* with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Migrational Characteristics of Juvenile Spring Chinook Salmon and Steelhead in Lower Granite Reservoir and Tributaries Snake River written by Noah Swayambhu Adams and published by . This book was released on 1998 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Migrational Characteristics of Juvenile Spring Chinook Salmon and Steelhead in Lower Granite Reservoir and Tributaries Snake River written by Michael J. Banach and published by . This book was released on 1996 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Migrational Characteristics of Juvenile Spring Chinook Salmon and Steelhead in the Forebay of Lower Granite Dam Relative to the 1997 Surface Bypass Collector Tests written by Noah Swayambhu Adams and published by . This book was released on 1998 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Migrational Characteristics of Juvenile Chinook Salmon and Steelhead in Lower Granite Reservoir and Tributaries Snake River written by Dennis W. Rondorf and published by . This book was released on 1996 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Smolt Migration Characteristics and Mainstem Snake and Columbia River Detection Rates of PIT tagged Grande Ronde and Imnaha River Naturally produced Spring Chinook Salmon written by Paul M. Sankovich and published by . This book was released on 1995 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development Report written by United States. Bonneville Power Administration and published by . This book was released on 1989 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development Report Fiscal Years written by United States. Bonneville Power Administration and published by . This book was released on 1987 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Smolt Condition and Timing of Arrival at Lower Granite Reservoir 1983 1984 Technical Report written by and published by . This book was released on 1985 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hatcheries released 9.3 million chinook salmon and 6.3 million steelhead smolts and presmolts upriver from Lower Granite Reservoir for migration In spring, 1984. We operated smolt monitoring traps at Whitebird from March 14 to May 12, Snake River from March 22 to May 15 and Clearwater from March 29 to May 13. Peak passage of yearling chinook salmon occurred the third week In April at both Whitebird and Snake River traps. Passage of steelhead was still increasing when high water stopped trapping in mid-May. Median migration rates for branded chinook salmon between release sites and Whitebird were 3, 17 and 15 miles/day for Rapid River, South Fork Salmon and Decker Flat smolts, respectively, an average of 11.6 miles/day. Average migration rate for these three groups between Whitebird and Snake River trap was 28 miles/day. Average migration rate between release sites and Snake River (the head of Lower Granite Reservoir) was 13.2 miles/day and from that point on through the reservoir to the dam, 1.9 miles/day. Salmon River discharge, when considered along with other environmental factors, had the greatest effect on migration rate of smolts branded both at hatcheries and at the Whitebird trap and migrating to the head of Lower Granite Reservoir. Migration rate for steelhead released from Dworshak Hatchery and recaptured at the Clearwater trap was 34 miles/day. Survival rates to the Snake River trap of branded chinook salmon smolts released at Hells Canyon Dam, Rapid River, South Fork Salmon and Decker Flat were 52%, 65%, 68% and 35%, respectively. Classical descaling, where at least 40% of the scales are missing from at least two of five areas on the side of a smolt, ranged from 0 to 5.3% at hatcheries for chinook salmon and was less than 1% for steelhead. Descaling rate often Increased about 1% at release sites. Classical descaling at Whitebird, Clearwater and Snake River traps averaged 4.5, 2.5 and 1.5% for chinook salmon, 2.1, 0.4 and 1.4% for wild steelhead and 8.7, 4.1 and 5.5% for hatchery steelhead, respectively. Scattered descaling, where at least 10% of scales are missing from at least one side of a fish, was always more extensive than was classical descaling, ranging from 2.5 times greater for Clearwater hatchery steelhead to 6.8 times greater for Clearwater wild steelhead. Mean total length of chinook salmon yearlings was the same at all the traps, i.e., 128 mm (117 mm fork length) + 1 mm. The largest chinook salmon smolts came from Dworshak National Fish Hatchery on the Clearwater River. Hatchery steelhead were smallest (2 = 203 mm) at the Clearwater trap and largest (2 = 239 mm) at the Whitebird trap. Wild steelhead were also smallest at Clearwater trap ({bar x} = 178 mm) and largest at Whitebird trap ({bar x} = 193 mm). Purse seining to evaluate rates of descaling before and after smolts passed Lower Granite Dam was largely ineffective since we were unable to catch sufficient numbers of smolts in the tailrace, and winds in the forebay area altered descaling rates in sampled smolts.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-04 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Smolt Condition and Timing of Arrival at Lower Granite Reservoir 1984 Annual Report written by and published by . This book was released on 1986 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hatcheries released 9.3 million chinook salmon and 6.3 million steelhead smolts and presmolts upriver from Lower Granite Reservoir for migration in spring, 1984. Peak passage of yearling chinook salmon occurred the third week in April at both Whitebird and Snake River traps. Passage of steelhead was still increasing when high water stopped trapping in mid-May. Average migration rate between release sites and Snake River (the head of Lower Granite Reservoir) was 13.2 miles/day and from that point on through the reservoir to the dam, 1.9 miles/day. Salmon River discharge, when considered along with other environmental factors, had the greatest effect on migration rate of smolts branded both at hatcheries and at the Whitebird trap and migrating to the head of Lower Granite Reservoir. Migration rate for steelhead released from Dworshak Hatchery and recaptured at the Clearwater trap was 34 miles/day. Survival rates to the Snake River trap of branded chinook salmon smolts released at Hells Canyon Dam, Rapid River, South Fork Salmon and Decker Flat were 52%, 65%, 68% and 35%, respectively. Classical descaling, where at least 40% of the scales are missing from at least two of five areas on the side of a smolt, ranged from 0 to 5.3% at hatcheries for chinook salmon and was less than 1% for steelhead. Scattered descaling, where at least 10% of scales are missing from at least one side of a fish, was always more extensive than was classical descaling, ranging from 2.5 times greater for Clearwater hatchery steelhead to 6.8 times greater for Clearwater wild steelhead. Mean total length of chinook salmon yearlings was the same at all the traps, i.e., 128 mm (117 mm fork length) +- 1 mm.
Download or read book Research Plan to Determine Timing Location Magnitude and Cause of Mortality for Wild and Hatchery Spring Summer Chinook Salmon Smolts Above Lower Granite Dam Final Report written by and published by . This book was released on 1993 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1966 to 1968, Raymond estimated an average survival rate of 89% for yearling chinook salmon (Oncorhynchus tshawytscha) migrating from trap sites on the Salmon River to Ice Harbor Dam, which was then the uppermost dam on the Snake River. During the 1970s, the estimated survival rate declined as the proportion of hatchery fish increased and additional dams were constructed. Recent survival indices for yearling chinook salmon smolts in the Snake River Basin indicate that substantial mortalities are occurring en route to Lower Granite Dam, now the uppermost dam on the Snake River. Detection rates for wild and hatchery PIT-tagged smolts at Lower Granite Dam have been much lower than expected. However, for wild fish, there is considerable uncertainty whether overwinter mortality or smolt loss during migration is the primary cause for low survival. Efforts to rebuild these populations will have a better chance of success after the causes of mortality are identified and addressed. Information on the migrational characteristics and survival of wild fish are especially needed. The goal of this initial planning phase is to develop a research plan to outline potential investigations that will determine the timing, location, magnitude, and cause of smolt mortality above Lower Granite Dam.
Download or read book Migrational Characteristics of Juvenile Chinook Salmon and Steelhead in the Forebay of Lower Granite Dam Relative to the 1996 Surface Bypass Collector Tests written by Noah Swayambhu Adams and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Migration of Adult Chinook Salmon and Steelhead Past Dams and Through Reservoirs in the Lower Snake River and Into Tributaries 1992 Evaluation of Passage of Adult Salmon and Steelhead at Lower Granite Dam and of Electronic and Underwater Video Technologies as Passage Evaluation Methods written by and published by . This book was released on 1994 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the upstream migration of adult spring and summer chinook salmon Oncorhynchus tshawytscha and steel head 0. mykiss past the four lower Snake River dams, through the reservoirs, and into the tributaries of the Snake River drainage was initiated in 1991 and continued in 1992 and 1993. The objectives were to evaluate the effect of spill, powerhouse operation, and flows on the rates of passage of the fish at the dams, migration through the reservoirs, the fishway entrances used, fallback at the dams, and movements into the tributaries upstream from the reservoirs.
Download or read book Programmatic Biological Assessment of the Proposed 1994 98 LSRCP Program written by and published by . This book was released on 1993 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology of Chinook and Blueback Salmon and Steelhead in the Wenatchee River System written by Robert R. French and published by . This book was released on 1959 with total page 28 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:
