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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

  • Banking on a Future for California’s Natural Resources Posted last month
    A California red-legged frog sits motionless at the edge of McClure pond at the Sparling Ranch Conservation Bank. Photo by Ashley Spratt/USFWS McClure pond is one of the most productive California red-legged frog ponds at the Sparling Ranch Conservation Bank. ...
  • Bringing the Paiute Cutthroat Trout Home Posted last week
    CDFW Scientific Aide Aimee Taylor prepares electrofisher to harmlessly catch Paiute cutthroat trout in North Fork Cottonwood Creek. The extremely rare Paiute cutthroat trout (PCT). Photo by William Somer for CDFW. Aimee Taylor and Senior Environmental Scientist Jeff Weaver electrofish PCT ...
  • Enhancement Projects Weed Out Invasives in Marin County Posted 2 weeks ago
    Native to the California coast and the California/Nevada state line, the Myrtle’s silverspot butterfly feeds on the nectar of the monardella flowers. One of 33 species of birds listed as threatened or endangered by the State of California or the ...
  • Stacking the Odds to Stock California’s Waters Posted 3 weeks ago
    Working late, Mojave River hatchery staff apply FDA-certified epoxy coating to hatchery rearing ponds. CDFW fish transportation truck at Fillmore Hatchery Acting Mojave River Hatchery Manager Forest Williams at work A hatchery crew releases trout into the Feather River A fishy view of ...
  • Science Spotlight: Studying a “Foundation Species” in the Shadow of Mount Shasta Posted last month
    CDFW Environmental Scientist Brian Ehler measures the hind-foot length on a fawn captured near Medicine Lake for a mule deer study. CDFW Environmental Scientist Brian Ehler measures the hind-foot length on a fawn captured near Medicine Lake for a mule ...
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