Check Water Temperatures Before Your River Visit

Water temperatures below 70 degrees causes you to lose breathing & muscle control which can lead to drowning. The colder the water the more extreme the impacts. Enjoy the river by staying dry when water is cold. Read More >

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Last Map Update: Sun, Jul 5, 2026 at 12:48:31 pm PDT

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

Red Flag Warning

Small Craft Advisory

Hazardous Seas Warning

Wear a Life Jacket

Sending a friendly reminder that wearing a life jacket will make your river visit safer. Even though summer is here, rivers can remain hazardous all year long. Hidden hazardous like submerged trees, rocks, and unexpected currents can make jumping off high rocks or swimming across the river dangerous.