Timeline of the San Francisco Bay Area Gate across the bay<br> Atherton is incorporated in San Mateo County<br> California Memorial Stadium "(pictured, right)" opens in Berkeley, as the home field for the California Golden Bears football team of the University of California, Berkeley<br> The East Bay Municipal Utility District is formed to provide water and sewage treatment services to the East Bay<br> The San Francisco Opera Ballet gives its first performance, of "La bohème" "(pictured, left)", with Queena Mario and Giovanni Martinelli, conducted by founder Gaetano Merola, at the San Francisco Civic Auditorium 1924 1925 The heated, saltwater Fleishhacker Pool in San Francisco opens "(pictured, left)"<br> The
San Francisco Bay arrived at a large arm of what is now called Drakes Bay. At the time, Drakes Bay went by the name "Bahia de San Francisco" and thus both bodies of water became associated with the name. Eventually, the larger, more important body of water fully appropriated the name "San Francisco Bay". The first European to enter the bay is believed to have been the Spanish explorer Juan de Ayala, who passed through the Golden Gate on August 5, 1775 in his ship the "San Carlos", and moored in a bay of Angel Island now known as Ayala Cove. Ayala continued