Is CA's central valley water challenged? The Imperial valley siphoning the Colorado River and LA siphoning the back of the Sierras are. But northern Central val

Is CA's central valley water challenged? The Imperial valley siphoning the Colorado River and LA siphoning the back of the Sierras are. But northern Central valley especially seems quite abundant in water from the runoff of the Sierras. Reservoirs are looking pretty good to me https://cdec.water.ca.gov/resapp/RescondMain https://cdec.water.ca.gov/resapp/RescondMain