Garden Island is a

tied island Tied islands, or land-tied islands as they are often known, are landforms consisting of an island that is connected to mainland or another island only by a tombolo: a spit of beach materials connected to land at both ends. St Ninian's Isle i ...

from Clarence Point, near the mouth of the

Tamar River The Tamar River, officially kanamaluka / River Tamar, is a estuary located in northern Tasmania, Australia. Despite being called a river, the waterway is a brackish and tidal estuary over its entire length. Location and features Formed by the ...

Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ...

. It is accessed by a

dirt road A dirt road or track is a type of unpaved road not paved with asphalt, concrete, brick, or stone; made from the native material of the land surface through which it passes, known to highway engineers as subgrade material. Dirt roads are suitable ...

off Bevic Road, which runs between

West Tamar Highway The West Tamar Highway is a highway in Tasmania, Australia. It covers the western edge of the Tamar River The Tamar River, officially kanamaluka / River Tamar, is a estuary located in northern Tasmania, Australia. Despite being called a ...

, Kelso and Clarence Point Road. This large area is owned by TasPorts. Garden Island is surrounded on all sides by the Tamar River, an

estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environm ...

which has been excavated to provide a channel for

shipping Freight transport, also referred as ''Freight Forwarding'', is the physical process of transporting commodities and merchandise goods and cargo. The term shipping originally referred to transport by sea but in American English, it has been ...

. The backfill from this dredging was moved towards the shore, and provided easier access by connecting the island. There are no facilities of any type on the island, but it provides productive

seawater Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has appr ...

fishing Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from the natural environment, but may also be caught from stocked bodies of water such as ponds, canals, park wetlands and reservoirs. Fishing techniques inclu ...

spots, and a flat and open scenic lookout. There are also plenty of oysters in the estuary, but toxic levels of

copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...

zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...

and

cadmium Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of ...

have been found in the oysters. The island was known as Green Island in the early nineteenth century, and used for food storage by the settlement established by Colonel William Paterson in 1804.

References

Tamar River Islands of Tasmania {{Tasmania-geo-stub