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Recent accomplishments of CDFW's scientific community


Surveying the Sacramento River and Delta

Surveying the Sacramento River and Delta

Since 1959 the California Department of Fish and Wildlife (CDFW) has used a combination of scientific techniques to better understand fish populations and the general health of Northern California waterways. Examples include tagging sturgeon, trawling the Delta for smelt, and counting salmon carcasses. CDFW uses data from these strategies and others to help influence operations of the State Water Project and Central Valley Project, ultimately helping decision makers determine water flows. link opens in new windowThis short video highlights these operations along the Sacramento River and into the Delta, including a smelt survey conducted by Environmental Scientist Felipe la Luz.

a man and a woman on the aft deck of small vessel on a river a woman and man prepare a fish-catching net




Recent Posts

  • Dove Banding Posted 4 days ago
    CDFW Seasonal Aid Katie Schroyer determines the age of a dove by examining its wing A banded mourning dove at a CDFW trap site in northern California Age and sex data are recorded before the bird is banded and released. A large ...
  • CDFW Kelp Survey Posted last week
    Beneath the waters off the California coast are vast forests that are home to an astounding variety of animals. Their sunlit canopies can soar 150 feet from the ocean’s floor. But instead of trees, these forests are made of ...
  • Scientists Battle Mange Outbreak in Urban Kit Fox Population Posted 2 weeks ago
      Fate has not been kind to the San Joaquin kit fox (Vulpes macrotis mutica). Shrinking habitat caused by urbanization and agricultural expansion landed this Central Valley native on the federal Endangered Species List decades ago. California’s total population of San ...
  • Pacific Herring Report Posted 3 weeks ago
    The Pacific herring – much like squid and anchovy – is an important forage fish that supports a commercial fishery and provides a prey source for all manner of fish and wildlife, including whales, seals, sea lions, sturgeon, salmon, ...
  • Golden Trout Relocation Posted last month
    This summer marked the end of an incredible journey for four dozen of California’s designated state freshwater fish, the golden trout, as they returned home after 10 months away. The fish traveled more than 500 miles in tanks and ...
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