A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.
The Raccoon Strait is a waterway of the San Francisco Bay between Angel Island and the Tiburon Peninsula, mainland Marin County, California.During the ice ages, when sea levels were considerably lower and San Francisco Bay was a grassy valley, the combined Sacramento-San Joaquin river flowed through what is now Raccoon Strait before flowing through the canyon at the Golden Gate.
A waterway is any navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other languages. A first distinction is necessary between maritime shipping routes and waterways used by inland water craft. Maritime shipping routes cross oceans and seas, and some lakes, where navigability is assumed, and no engineering is required, except to provide the draft for deep-sea shipping to approach seaports (channels), or to provide a short cut across an isthmus; this is the function of ship canals. Dredged channels in the sea are not usually described as waterways. There is an exception to this initial distinction, essentially for legal purposes, see under international waters.
San Francisco Bay is a shallow estuary in the US state of California. It is surrounded by a contiguous region known as the San Francisco Bay Area, and is dominated by the large cities of San Jose, San Francisco and Oakland.
Angel Island is an island in San Francisco Bay offering expansive 360° views of the San Francisco skyline, the Marin County Headlands and Mount Tamalpais. The entire island is included within Angel Island State Park and is administered by California State Parks. The island, a California Historical Landmark, has been used for a variety of purposes, including military forts, a US Public Health Service Quarantine Station, and a US Bureau of Immigration inspection and detention facility. The Angel Island Immigration Station on the northeast corner of the island, where officials detained, inspected, and examined approximately one million immigrants, has been designated a National Historic Landmark.
From Angel Island California State Park in San Francisco Bay. Ref. California State Parks Angel Island.
In 1814, the British 26-gun sloop of war, HMS Racoon, was damaged off the coast of Oregon, but stayed afloat to reach San Francisco Bay. From March 13 to 19th, the ship was repaired on the beach at Ayala Cove on the Northern portion of Angel Island, at the location of the present day ferry boat dock. This event gave the name to the deep-water channel between Tiburon and Angel Island. It is unclear whether the ship was engaged in the War of 1812 or, more likely, protecting British and Canadian fur traders.
HMS Racoon, sometimes spelled HMS Raccoon, was an 18-gun ship sloop of the Cormorant Class of the Royal Navy. She was built by John Preston, of Great Yarmouth, and launched on 30 March 1808. She sailed as far as Fort Astoria on the Columbia River. She became a hospital ship in 1819 and finally was sold in 1838.
The Spanish, the first European power to control the area, established the village of Tiburon on the north side of the body of water and showed the straits on their charts as the Straits of Tiburon. Tiburon is the Spanish word for shark, named for the subspecies of leopard shark native to San Francisco Bay.
Tiburon is an incorporated town in Marin County, California. It is located on the Tiburon Peninsula, which reaches south into the San Francisco Bay. The smaller city of Belvedere occupies the south-west part of the peninsula and is contiguous with Tiburon. Tiburon is bordered by Corte Madera to the north and Mill Valley to the west, but is otherwise mostly surrounded by the Bay. Besides Belvedere and Tiburon, much of the peninsula is unincorporated, including portions of the north side and the communities of Strawberry and Paradise Cay.
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha and are the sister group to the rays. However, the term "shark" has also been used for extinct members of the subclass Elasmobranchii outside the Selachimorpha, such as Cladoselache and Xenacanthus, as well as other Chondrichthyes such as the holocephalid eugenedontidans.
The leopard shark is a species of houndshark, in the family Triakidae. It is found along the Pacific coast of North America, from the U.S. state of Oregon to Mazatlán in Mexico. Typically measuring 1.2–1.5 m (3.9–4.9 ft) long, this slender-bodied shark is immediately identifiable by the striking pattern of black saddle-like markings and large spots over its back, from which it derives its common name. Large schools of leopard sharks are a common sight in bays and estuaries, swimming over sandy or muddy flats or rock-strewn areas near kelp beds and reefs. They are most common near the coast, in water less than 4 m (13 ft) deep.
The mainland of the Tiburon Peninsula is dominated by Ring Mountain, which is endowed with considerable archaeological traces of the early Native Americans, who settled the local area. Ring Mountain is also replete with numerous species of native wildflowers.The mainland point of closest distance to the strait is Point Tiburon, off which the water depth is approximately 15 fathoms.
The indigenous peoples of the Americas are the Pre-Columbian peoples of North, Central and South America and their descendants.
A wildflower is a flower that grows in the wild, meaning it was not intentionally seeded or planted. Yet "wildflower" meadows of a few mixed species are sold in seed packets. The term implies that the plant probably is neither a hybrid nor a selected cultivar that is in any way different from the way it appears in the wild as a native plant, even if it is growing where it would not naturally. The term can refer to the flowering plant as a whole, even when not in bloom, and not just the flower.
Belvedere is an incorporated city located on the San Francisco Bay in Marin County, California, United States. Consisting of two islands and a lagoon, it is connected to the Tiburon Peninsula by two causeways. At the 2010 census, the population was 2,068. The per-capita income of Belvedere residents in the year 2000 was $250,000, making it one of the highest-income cities in California and the eighth highest-income community in the United States. Belvedere and Tiburon share a post office and the 94920 zip code.
The Golden Gate is a strait on the west coast of North America that connects San Francisco Bay to the Pacific Ocean. It is defined by the headlands of the San Francisco Peninsula and the Marin Peninsula, and, since 1937, has been spanned by the Golden Gate Bridge. The entire shoreline and adjacent waters throughout the strait are managed by the Golden Gate National Recreation Area.
San Pablo Bay is a tidal estuary that forms the northern extension of San Francisco Bay in the East Bay and North Bay regions of the San Francisco Bay Area in northern California.
Richardson Bay is a shallow, ecologically rich arm of San Francisco Bay, managed under a Joint Powers Agency of four northern California cities. The 911-acre (369 ha) Richardson Bay Sanctuary was acquired in the early 1960s by the National Audubon Society. The bay was named for William A. Richardson, early 19th century sea captain and builder in San Francisco.
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.
Strawberry Lagoon is an inlet within Richardson Bay, Marin County, California, United States. This location, particularly on Strawberry Spit, is a winter haul-out area for the Harbor seal. Pressures of urban development at Strawberry Point along with increases in small boat traffic have diminished the use of this lagoon for seal haul out, noted as early as 1990.
Strawberry Spit is a small artificial island in the San Francisco Bay's Richardson's Bay embayment of Strawberry Lagoon. It is still referred to as Strawberry Spit, although it no longer is technically a spit.
Bothin Marsh is a half acre wetlands in Marin County, California. Parts of the wetlands are in Bothin Marsh Open Space Preserve, a regional park.
Belvedere Island is a rocky island in Marin County, California which was separated by a marsh from the mainland and has now been linked by two spits. Part of the town of Belvedere, California is located on the island.
The Tiburon Peninsula is a landform of the San Francisco Bay Area's Marin County and is home to the incorporated municipalities of Tiburon, Belvedere, and a portion of Corte Madera, California. Much of the peninsula is unincorporated, including portions of the north side and the communities of Paradise Cay and Strawberry. Richardson Bay separates the peninsula from the Marin County mainland. Angel Island lies app. 1 mile south of the peninsula's southern tip. Much of the land area of the Tiburon Peninsula was part of a Spanish land grant originally given to the early Californian John Reed. A prominent feature of the Tiburon Peninsula is Ring Mountain, Marin County, which forms the backbone of the peninsula and is the highest elevation of the peninsula. The Tiburon Peninsula is the locus of a number of rare and endangered flora species, and is also the site of ancient Native American rock carvings. The mineral lawsonite was first described from an occurrence on the Tiburon Peninsula.
Belvedere Lagoon is an artificial lagoon on San Francisco Bay in Belvedere in Marin County, California. Narrow strips of land separate it from Richardson Bay and Raccoon Strait.
Paradise Cay, also known as County Service Area No. 29, is an unincorporated enclave, surrounded by the town of Tiburon in Marin County, California, located 2 miles (3 km) south of Point San Quentin at an elevation of 23 feet. The waterfront community lies at the foot of the Tiburon Peninsula south of Corte Madera Creek along San Francisco Bay. The community is in ZIP code 94920 and area code 415.
The Lyford House is a Victorian house located in Tiburon, California. Built in 1876, the house is listed on the National Register of Historic Places.
Ayala Cove is a ferry terminal on Angel Island in Marin County, California in the San Francisco Bay Area. There is regularly scheduled passenger ferry service to Tiburon as well as San Francisco.
Ring Mountain is an elevated landform on the Tiburon Peninsula in Marin County, California. This mountain was named for George E. Ring, who served as a Marin County Supervisor from 1895 to 1903.
Triangle Marsh is a wetland of the San Francisco Bay, situated at the base of Ring Mountain at the north end of the Tiburon Peninsula in Marin County, California.
John Thomas Reed was an early California European settler who was the grantee of Rancho Corte Madera del Presidio in what is now Marin County, California.
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