Many thousands of fall-run Chinook salmon migrated beneath the Golden Gate Bridge into the upper Sacramento River to spawn this fall. About 100 of the adult fish carried small tags that signaled their location as they went.
A monitoring network tracked the fish, showing their progress online in real time as part of a joint project by scientists at NOAA Fisheries and UC Santa Cruz. They followed adult salmon through the Sacramento-San Joaquin River Delta into Central Valley Rivers and their tributaries. The scientists want to know what affects salmon survival and how many fish reach their spawning grounds.
Continue reading at fisheries.noaa.gov.