Salmon Population Summaries (SPS) - NOAA Fisheries
Jun 30, 2020 · This site was designed to provide access to demographic data compiled for ESA-listed salmonid populations as part of the NWFSC's technical recovery planning efforts.
Salmon Population Summary Data - National Oceanic and …
Welcome to the Northwest Fisheries Science Center's (NWFSC) Salmon Population Summary (SPS) database web site. This site was designed to provide access to demographic data compiled for ESA-listed salmonid populations as part of the NWFSC's technical recovery planning efforts.
'Really unusual': New study shows why salmon vanished in NorCal
1 day ago · A new UC Berkeley study reveals how one dry winter decimated salmon and trout populations across Northern California — and how they made a comeback.
Low California salmon population could prevent fishing for third …
Mar 6, 2025 · California's fishing fleet depends on catching Chinook salmon. Low population numbers could lead regulators to shut down or sharply limit fishing this year.
Population data and references for the Salmon Population …
Nov 21, 2022 · The data contained in the SPS database are primarily summary data, compiled at the population level. The database also includes a limited number of series representing the aggregate returns to groups of populations (e.g., Lower Granite Dam counts) or counts of spawners within a subsection of a population where expansions to the population level ...
Atlantic Salmon Population Monitoring and Stock Assessment
Our assessment work provides managers information about Atlantic salmon population status, particularly relative abundance and trends. These data are summarized in the US Atlantic …
The Decline of Salmon Populations - ArcGIS StoryMaps
Jun 10, 2023 · Within the Pacific Northwest we are facing an issue of Pacific Salmon populations decreasing. This includes from Northern California up to Southern Canada. Documented peak years of populations occurred the late 1900s but, there …
NOAA Staffing Cuts Threaten Years of Salmon Harvests
3 days ago · The Northwest Indian Fisheries Commission has helped forecast the return of salmon populations since the 1970s, and used those models to estimate how to sustain a healthy fish population and harvest.
Declining Salmon Populations in the PNW - ArcGIS StoryMaps
Jun 8, 2024 · The decline of salmon populations in the Pacific Northwest is a crucial sustainability issue due to its profound impacts on biodiversity, regional economy, and cultural heritage.
Why are there so few salmon left? | U.S. Geological Survey
There are many reasons for the decline in salmon populations. Logging an area around a stream reduces the shade and nutrients available to the stream and increases the amount of silt or dirt in the water, which can choke out developing eggs.