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1991-029-00 POST-RELESE ATTRIBUTES & SURVIVAL OF HATCHERY & NATUR
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27429: 199102900 EXP EFFECTS OF SUM FLOW AUG. ON JUV. SNAKE R. FALL CHIN
Contract Status:
Closed
Contract Description:
The effects of summer flow augmentation on the migratory behavior and survival of juvenileSnake River fall Chinook salmon
Statement of Work and Budget FY2005
BPA Project Number: 1991-029-00
BPA Project Title: Effects of summer flow augmentation on Snake River fall Chinook salmon
Contract Number: 5233
Contract Title: The effects of summer flow augmentation on the migratory behavior and survival of juvenileSnake River fall Chinook salmon
Performance/Budget Period: June 1, 2005 - May 31, 2006
William P. Connor
U.S. Fish and Wildlife Service
4147 Ahsahka Rd.
Ahsahka, ID 83520
Phone: (208) 476-2242; Fax: (208) 476-7228
william_connor@fws.gov
Diane Praest
U.S. Fish and Wildlife Service
4147 Ahsahka Rd.
Ahsahka, ID 83520
Phone: (208) 476-2222; Fax: (208) 476-7228
diane_praest@fws.gov
Contract Background Section:
... BACKGROUND
Dams reduce the survival of Chinook salmon smolts during early seaward migration. Summer flow augmentation is implemented annually to mitigate for Snake River fall Chinook smolt mortality caused by the four dams in the lower Snake River by increasing downstream migration rate and survival. There are two philosophies regarding summer flow augmentation within the resource management community of the Columbia River basin. One philosophy embraces summer flow augmentation based on studies that show flow augmentation increases the migration rate and survival of fall Chinook salmon smolts. The other questions the existing migration rate and survival studies, and advocates the use of limited reservoir water for other fishery and economic purposes. For the present and near future, summer flow augmentation will be implemented annually as one measure to recover Snake River fall Chinook salmon listed for protection under the Endangered Species Act. Fishery managers will require pre-augmentation data to develop annual water management plans, and post-augmentation data for evaluation. Fishery managers also need new and more detailed information on how summer flow augmentation affects water temperature, water velocity, juvenile fall Chinook salmon migratory behavior, and survival in Lower Granite Reservoir.
COORDINATION
Coordination with the agencies and tribes is necessary to avoid duplicating work and to make efficient use of existing resources and personnel. Since 1991, personnel of this project have effectively coordinated its juvenile fall Chinook salmon research with the Bonneville Power Administration, Environmental Protection Agency, Fish Passage Center, Idaho Fish and Game, Idaho Power Company, National Marine Fisheries Service, Nez Perce Tribe, Oregon Department of Fish and Wildlife, Pacific States Marine Fisheries Commission, U. S. Army Corps of Engineers, U. S. Fish and Wildlife Service, U. S. Geological Survey, University of Idaho, and Washington Department of Fish and Wildlife. Our personnel will continue to seek coordination into the year 2006.
GOAL
Our research goal is to provide fishery managers with an understanding of the migratory behavior and survival of juvenile fall Chinook salmon in the Snake River, so that maximum recovery benefits of summer flow augmentation can be realized.
OBJECTIVES AND RATIONALE
Objective 1: Provide information to fishery managers to maximize the effectiveness of summer flow augmentation.
Wild subyearling fall Chinook salmon are implanted with passive integrated transponders from March to July. The PIT-tag data are provided weekly each year via the PIT-tag Information System, where in turn, it is downloaded, analyzed, and posted in real time on Internet services to track and predict passage at Lower Granite, Little Goose, Lower Monumental, and McNary dams. Project staff use these data to brief the Fish Passage Advisory Committee and the Technical Management Team during planning and implementations of summer flow augmentation. Project staff also use published methods to conduct a post-season analysis on the PIT-tag data to determine if summer flow augmentation increased survival of wild subyearling fall Chinook salmon. The results of this post-season analysis are presented at the TMT year end review.
Objective 2: Understand how summer flow augmentation affects water temperature, water velocity, juvenile fall Chinook salmon migratory behavior, and juvenile fall Chinook survival salmon in Lower Granite Reservoir.
NEED INFO FROM KEN.
Account Type(s):
Expense
Contract Start Date:
06/06/2001
Contract End Date:
05/31/2006
Current Contract Value:
$1,271,332
Expenditures:
$1,271,332
* Expenditures data includes accruals and are based on data through 31-Mar-2025.
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In-season forecasts of juvenile fall Chinook salmon passage past Lower Granite Dam
Prepare field equipment. Beach seine juvenile fall Chinook salmon at stations along the Snake River from April through June each year, and PIT Tag all juvenile fall Chinook salmon 60-mm fork length and longer. Upload PIT-tag data to the PIT Tag Information System weekly each year. In late June or early July of each year, forecast passage at Lower Granite Dam for fall Chinook salmon smolts and compile historical data for managers. Repair and store field equipment.
Analyses of summer flow augmentation to determine its effect on fish survival.
Proof data. Assess the performance of the passage forecast. Use the single release-recapture model to estimate survival probability to the tailrace of Lower Granite Dam for each of four sequential within year release groups, use these survival estimates to validate the 1998-2000 survival model developed for juvenile fall Chinook salmon, and then predict what survival would have been if summer flow augmentation had not been implemented. Make presentations to managers and coordinate information with other projects related to fall Chinook salmon recovery (e.g., USACE transportation and spill research)
Prepare technical report of research findings from field work and analyses conducted in 2005. Report will describe methods, data summaries, and results of statistical analyses. Results will be discussed in terms of their relevance to summer flow augmentation.
Produce a manuscript for peer-review publication that summarizes the relation between subyearling fall Chinook salmon migration rates and water velocities in the Snake River for the years 2002-2005. The information produced for the Annual Report Work Element in the SOW of our USGS cooperators will serve as the basis for the manuscript.
Covers work to manage on the ground efforts associated with the project. Also covers administrative work in support of on the ground efforts and in support of BPA's programmatic requirements such as financial reporting, and development of a SOW package (includes draft SOW, budget, spending cap, and property inventory).
Produce quarterly report of project activities, based on fiscal year quarters. This will be reported within Pisces, using the red/yellow/green reporting system.
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