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Between Hayward and San Mateo to San Jose it is 12 to 36 in (30-90 cm). Bair Island in San Mateo County, with phosphate flame retardant contaminants such as tris(1,3-dichloro-2-propyl)phosphate (TDCPP) and triphenyl phosphate (TPhP) found at levels comparable to thresholds for aquatic toxicity. Two endangered species of birds are found here: the California least tern and the Ridgway's Rail. Good character and self-respect are the things I be aware of. If nothing else there are stunning views of the city, four hands massage in San Jose ca but why not stay a while and see who you meet. And, why not? For all the reasons Costa Rica is perfect for a honeymoon, it’s also a wonderful place to make a forever promise to the person you love most. Army Corps began dredging the Sacramento and San Joaquin Rivers and the deep channels of San Francisco Bay. Large ships transiting the bay must follow deep underwater channels that are maintained by frequent dredging as the average depth of the bay is only as deep as a swimming pool-approximately 12 to 15 ft (4-5 m).



In the late 1990s, a 12-year harbor-deepening project for the Port of Oakland began; it was largely completed by September 2009. Previously, the bay waters and harbor facilities only allowed for ships with a draft of 46 ft (14 m), but dredging activities undertaken by the United States Army Corps of Engineers in partnership with the Port of Oakland succeeded in providing access for vessels with a 50-foot (15 m) draft. The yet-to-be-named brand new Southeast Branch is also planned, bringing the bond library project to its completion. A deep channel ran through the center of the bay, following the ancient drowned river valley. In the decades surrounding 1900, at the behest of local political officials and following Congressional orders, the U.S. Recent genetic studies show that there is a local stock from San Francisco to the Russian River and that eastern Pacific coastal populations rarely migrate far, unlike western Atlantic Harbor porpoise. Despite its urban and industrial character, San Francisco Bay and the Sacramento-San Joaquin River Delta remain perhaps California's most important ecological habitats.



The seasonal range of water temperature in the Bay is from January's 53 °F (12 °C) to September's 60 °F (16 °C) when measured at Fort Point, which is near the southern end of the Golden Gate Bridge and at the entrance to San Francisco Bay. By the end of the 19th century, these "slickens" had filled in much of the shallow bay flats, raising the entire bay profile. During the 20th century, the bay was subject to the Reber Plan, which would have filled in parts of the bay in order to increase industrial activity along the waterfront. Exposed bay muds provide important feeding areas for shorebirds, but underlying layers of bay mud pose geological hazards for structures near many parts of the bay perimeter. At the same time, most of the marsh areas have been filled or blocked off from the bay by dikes. Before about 1860, most bay shores (with the exception of rocky shores, such as those in Carquinez Strait; along Marin shoreline; Point Richmond; Golden Gate area) contained extensive wetlands that graded nearly invisibly from freshwater wetlands to salt marsh and then tidal mudflat. The salt marsh harvest mouse is an endangered species endemic to the wetlands of the San Francisco Bay with a high salt tolerance.



Only salt-tolerant micro-algae survive in the high salinity ponds, and impart a deep red color to these ponds from the pigment within the algae protoplasm. On 4 August 1978, high school and university students, along with other popular movement sectors, organized the mass movement's first urban protest of the Lucas García period. The Mormon contingent was led by Captain David Seely (later first Stake President), Captain Jefferson Hunt and Captain Andrew Lytle, and included Apostles Amasa M. Lyman and Charles C. Rich. San Francisco Bay provided the nation's first wildlife refuge, Oakland's artificial Lake Merritt, constructed in the 1860s, and America's first urban National Wildlife Refuge, the Don Edwards San Francisco Bay National Wildlife Refuge (SFBNWR) in 1972. The Bay is also plagued by non-native species. Millions of waterfowl annually use the bay shallows as a refuge. Mid-salinity ponds support dense populations of brine shrimp, which provide a rich food source for millions of shorebirds.