OAKLAND (KRON) — Lake Temescal in Oakland is closed for swimmers due to an outbreak of toxic algae in the water. The East Bay Regional Park District closed the popular lake on Tuesday.

Temescal Canyon’s Makaila Riggs #38 gets ready to throw to first for an out against El Modena in a CIF Southern Section Division 1 softball semifinal game in Lake Elsinore Saturday, May 24, 2025.

Carson CA, Nov. 02, 2020 (GLOBE NEWSWIRE) -- Moleaer, the leading nanobubble technology company, has partnered with the East Bay Regional Park District to pilot this new technology at Lake Temescal.