Oakland Estuary

37°47′41.02″N 122°18′54.92″W

A view over the estuary from above Coast Guard Island. LAlameda is on the left, with Oakland on the right and San Francisco Bay in the distance.

The Oakland Estuary is the strait in the San Francisco Bay Area, California, separating the cities of Oakland and Alameda and the Alameda Island from the East Bay mainland. On its western end, it connects to San Francisco Bay proper, while its eastern end connects to San Leandro Bay.

Early history
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Alameda Island and connections:
  1. Posey and Webster Street tubes
  2. Park Street Bridge
  3. Fruitvale Bridge
  4. High Street Bridge
  5. Bay Farm Island Bridge

Although the estuary was used by Native American tribes inhabiting the local area since about 4000 BC, the earliest recorded history of the Oakland Estuary dates primarily from events extending back to the 19th century, as detailed in a research study conducted by Earth Metrics for the U.S. Army Corps of Engineers (Earth Metrics, 1990)(Shreffler, 1994). The Oakland Estuary and tributary stream channels were used for shipping transport regularly by the 1850s; early maritime commerce featured movement of lumber and cattle hides. At this time land west of Lake Merritt Slough consisted of undeveloped marshlands. In 1853 the first dredging project of this estuary was initiated,[1] to enable ferry service to San Francisco. By the late 19th century further landside development occurred featuring wharf expansions, railroad service and shipbuilding. The estuary was dredged by the Army Corps of Engineers, making Alameda an island in 1913. Coast Guard Island, originally known as Government Island, was formed in 1913 by the dredging project that extended the Oakland Estuary to San Leandro Bay.

Crossings
High Street Bridge

The estuary is spanned by two underwater tubes and three bridges. They are, from west to east:

Facilities

Facilities along the navigable route include the Port of Oakland, Naval Air Station Alameda and Coast Guard Base Alameda located on an island in the strait. Jack London Square is a publicly accessible mixed-use waterfront and marina area where the museum ship, USS Potomac (AG-25), is docked. There are several marinas, some with liveaboards.[2]

Further reading

References
  1. Jerrard, Laura, Fruitvale Bay Trail Park: A Feasibility Study and Design Proposal (1997), University of California, Berkeley, p.13.
  2. Sierra, Stephanie (September 14, 2023). "Coast Guard deploys boats to deter 'pirates' taking over Oakland estuary, officials say". ABC7 San Francisco. Retrieved September 17, 2023.
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