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Sacramento River heat threatens one in five Chinook salmon eggs

Original: California biologists warn Sacramento River heat could kill 1 in 5 Chinook salmon eggs

California wildlife biologists are warning that elevated water temperatures in the Sacramento River could kill roughly one in five Chinook salmon eggs this season. Warm water reduces oxygen levels and raises mortality rates for developing eggs, threatening one of the state's most important salmon runs on a river central to the state's water system.

Why now: Hot, dry conditions are heating California waterways during spawning season, raising concern over the salmon population and water management.

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• California biologists warn Sacramento River heat could kill 1 in 5 Chinook salmon eggs · The Cool Down

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