View uncertainty details

UncertaintyHow much do specific factors impact growth, fish condition, residence time, age at maturation and survival of focal fish species (anadromous salmonids, white sturgeon, Pacific lamprey, eulachon) in the estuary, plume, and ocean?
ThemeHabitat estuary, plume, and ocean
SubthemeEstuary assessment - estimation
Sources Anadromous Salmonid Monitoring Strategy - Spring Chinook
ISRP/ISAB 2009-1: Tagging Report
ISRP 2010-44a: RM&E and Artificial Production Categorical Review
Recommendations for the 2014 Program Amendment from WDFW, WAGSRO, USRTF, Cowlitz I.T., NOAA-F
Estuary Synthesis Report
Ocean Synthesis Report
NPCC Science Policy Exchange Summary 2007
NPCC Fish and Wildlife Program 2014
NPCC 2006-3: Research Plan 2006
Criticality Level Priority
Rationale Quantifying the impact of specific factors on focal fish species in the estuary, plume, and ocean will lead to more efficient and effective management and restoration actions throughout the Basin. The impacts of some factors (i.e., avian predation on Chinook and steelhead smolts in the estuary) are relatively well researched, whereas little is known about the impacts of other factors (i.e., climate change, hypoxia, acidification, fish propagation, contaminants, disease, and invasive species). It is important to understand these impacts across the continuum of habitats used by each species. For example, factors impacting growth in the estuary may also affect subsequent growth and survival in the plume and ocean. Monitoring estuary and ocean survival is difficult, but other biological indicators such as fish growth, condition, residence time, and age at maturation may be more feasible to monitor. Research addressing this critical uncertainty would continue to build upon a growing body of scientific information on factors impacting estuary and early marine survival of juvenile salmonids. The uncertainty is relevant to all focal species, and the results would be useful for further development of predictive (run forecasting) and life-history models. This critical uncertainty is modified from the 2006 Research Plan; see Part 2, ISAB/ISRP 2016-1, CU #19, for a discussion of progress made toward addressing this uncertainty.

Projects that address this uncertainty:

(click to view projects at

ID Title Sponsor Locations Purpose Emphasis Addresses
199302900 Survival Estimate for Passage through Snake and Columbia River Dams and Reservoirs National Oceanic and Atmospheric Administration Hydrosystem RM and E Indirectly
199601900 Data Access in Real Time (DART) University of Washington Hydrosystem Data Management Indirectly
199602000 Comparative Survival Study (CSS) Columbia Basin Fish and Wildlife Foundation, Fish Passage Center, Pacific States Marine Fisheries Commission, US Fish and Wildlife Service (USFWS) Programmatic RM and E Indirectly
199702400 Avian Predation on Juvenile Salmonids Oregon State University, Real Time Research Predation RM and E Indirectly
199801400 Ocean Survival Of Salmonids National Oceanic and Atmospheric Administration Programmatic RM and E Indirectly
200203200 Snake River Fall Chinook Salmon Life History Investigations Pacific Northwest National Laboratory, University of Washington, US Fish and Wildlife Service (USFWS), US Geological Survey (USGS) Hydrosystem RM and E Indirectly
200206000 Nez Perce Harvest Monitoring on Snake and Clearwater Rivers Nez Perce Tribe Mountain Snake/Clearwater, Upper Snake/Snake Upper Harvest RM and E Indirectly
200300700 Lower Columbia River Estuary Ecosystem Monitoring Lower Columbia Estuary Partnership Columbia River Estuary/Columbia Estuary, Lower Columbia/Columbia Lower Habitat RM and E Indirectly
200300900 Canada-USA Shelf Salmon Survival Study Canada Department of Fisheries and Oceans Programmatic RM and E Indirectly
200800400 Sea Lion Non-Lethal Hazing Columbia River Inter-Tribal Fish Commission (CRITFC) Lower Columbia/Columbia Lower Predation RM and E Indirectly
200871000 Development of an Integrated strategy for Chum Salmon Restoration in the tributaries below Bonneville Dam Washington Department of Fish and Wildlife (WDFW) Artificial Production Supplementation Indirectly

last updated: Jan 26, 2016