Lake Temescal Swimming

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Located in the Temescal Regional Recreation Area, Lake Temescal has an accessible Beach House adjacent to the swim area which offers changing rooms and showers. Swimming is allowed without lifeguards. Swimming is generally prohibited November through March, because of poor water quality. Beach wheelchairs are available free of charge on a first-come, first-served basis when lifeguards are on duty. See Park Accessibility on the Temescal park page for more information.

Swim Capacity

Once the swim facility capacity is reached, there will be no new entries allowed for the remainder of the day. Please take this into consideration when you are planning your visit.

Swim Beach Water Quality Program

Lake Temescal Beach is tested for bacterial levels weekly from April to October. The map below indicates the sample sites on the beach. The East Bay Regional Park District works with the Alameda County Environmental Health Department in accordance with California Department of Public Health's Guidance for Fresh Water Beaches to determine water quality at Lake Temescal Beach. Our stop light sign is used to display the relative water quality from our latest bacteriological tests and blue-green algae conditions.

Water Quality Stop Light Designations:

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Please be advised there is always some level of risk when swimming in any water body. To have a fun and safe experience swimming in the parks, we encourage you to follow a few simple rules:

* Keep water out of your mouth
* After you leave the water, shower and towel dry as soon as possible 
* Do not swim in the lake for 3 days after a rainstorm
* Check posted signs for water quality information

For more information contact the East Bay Regional Park District Water Management Department at (510) 544-2328

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