Scientists at the California Department of Water Resources are finding the Delta’s most elusive residents means digging deep down into the microscopic traces they leave behind.
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DWR Updates
Lake Oroville Update July, 3 2026, detailing Wildlife Safety at the State Recreation Area and free fishing day!
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This annual change in regulations is driven primarily by what scientists know about the life cycles and movements of native fish species that include Delta smelt, longfin smelt, steelhead, and Chinook salmon.
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As California faces increasing weather extremes brought on by climate change, watershed-scale planning has become an essential strategy for developing adaptable solutions and more resilient communities.
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Lake Oroville Update - June 19, 2026. Reopening of trailheads.
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This year marks the 55th anniversary of DWR’s apprenticeship program with 34 new hydroelectric plant (HEP) mechanics, electricians, operators, and utility craftworkers, joining the ranks of 675 former graduates who launched their careers in the program.
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