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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

  • CDFW Implants Transponders into Spring-Run Chinook Posted 5 days ago
    A tiny transponder is placed inside the body cavity of each female salmon. When the fish lay their eggs, the transponders will be expelled, providing scientists with information on when, where and how successful each spawning female is. After ...
  • CDFW and Oregon State University Researchers Estimate the Population Size of Fishers in Northern California and Southern Oregon Posted last week
    Scientists with the California Department of Fish and Wildlife (CDFW) and Oregon State University recently published the results of a population study on fishers (Pekania pennanti) in northern California and southern Oregon. Led by CDFW Wildlife Statistician Dr. ...
  • Sage Grouse Relocation Posted 2 weeks ago
    Five agencies in two states recently partnered to help a tiny population of Greater Sage Grouse avoid extinction along the California-Nevada border. Biologists from the California Department of Fish and Wildlife, the U.S. Fish and Wildlife Service, Los Angeles ...
  • Bald Eagles Posted 3 weeks ago
    Once on the verge of extinction in the lower 48 states, the bald eagle (Haliaeetus leucocephalus) has made a remarkable comeback in California. Management programs and protective laws (most notably, a ban on the pesticide DDT) have ...
  • California Fish and Game Journal, Issue 102-4 Posted last month
    The latest issue of California Fish and Game, CDFW’s scientific journal, is now available online. This century-old quarterly journal contains peer-reviewed scientific literature that explores and advances the conservation and understanding of California’s flora and fauna. A photo of the ...
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