Milson Island

Milsons Passage is a suburb of Sydney, in the state of New South Wales, Australia. It is located in the Hornsby Shire local government area. According to the 2011 census, the population was 112.

HMAS Parramatta, named after the Parramatta River, was a River-class torpedo-boat destroyer of the Royal Australian Navy (RAN). Ordered in 1909 for the Commonwealth Naval Forces (the predecessor of the RAN), Parramatta was the first ship launched for the RAN. Temporarily commissioned into the Royal Navy for the delivery voyage to Australia, the destroyer came under Australian naval control in 1910, and was recommissioned into the RAN on 1 March 1911, shortly before the latter's formal creation. After the beginning of the First World War in 1914 until 1917, Parramatta was conducted patrols in the Pacific and South-East Asia, before she and her sister ships were transferred to the Mediterranean for anti-submarine operations. She returned to Australia in 1919 and was placed in reserve. Apart from a brief period of full commission during the visit of the Prince of Wales in 1920, Parramatta remained in reserve until 1928. She was fully decommissioned in 1928, stripped of parts, and sold for use as prisoner accommodation on the Hawkesbury River. After changing hands several times, the hull ran aground during a gale in 1933, and was left to rust. In 1973, the bow and stern sections were salvaged, and converted into memorials.

HMAS Parramatta Shipwreck and Memorials is a heritage-listed shipwreck at Cascade Gully, Hawkesbury River, Bar Point, Central Coast, New South Wales, Australia. The heritage listing also includes three related memorials, two at Queens Wharf Reserve in Parramatta and one at Garden Island in Sydney. The original HMAS Parramatta was commissioned in 1910, paid off in 1928, and wrecked in 1934. The bow and stern sections were subsequently converted into memorials, while the third memorial relates to the second HMAS Parramatta, sunk in service at Tobruk in World War II. It was added to the New South Wales State Heritage Register on 15 December 2006.

Cheero Point is a waterfront locality and suburb of the Central Coast region of New South Wales, Australia. Cheero Point is located on the west bank of the Mooney Mooney Creek in the Brisbane Water National Park. It is situated 53 kilometres (33 mi) north of Sydney. It is part of the Central Coast Council local government area.

Peat Island is an island in the village of Mooney Mooney located in the Hawkesbury River on the Central Coast of New South Wales, Australia. The Island has approximately eight hectares of land and is located just upstream from the Pacific Motorway and Pacific Highway bridge. It is considered an island due to its size. There is one road connecting the landmass to the mainland.

Mooney Mooney is a small waterfront village and suburb of the Central Coast region of New South Wales, Australia. It is located in the Central Coast Council local government area at the end of a peninsula extending southwards into the Hawkesbury River, that is situated 50 kilometres (31 mi) north of Sydney. Mooney Mooney has two islands which are Peat Island and Spectacle Island Mooney Mooney is where the Pacific Motorway and Pacific Highway cross from the Central Coast into the Greater Sydney Metropolitan area on the south side of the Hawkesbury River.

Bar Point is a suburb of the Central Coast region of New South Wales, Australia, located on the north bank of the Hawkesbury River 53 kilometres (33 mi) north of Sydney. It is part of the Central Coast Council local government area.

The Peats Ferry Bridge is a steel truss bridge that carries the Pacific Highway (B83) across the Hawkesbury River, between Kangaroo Point and Mooney Mooney Point, located 40 kilometres (25 mi) north of Sydney in New South Wales, Australia. The bridge carries the Hornsby to Kariong section of highway, while the adjacent Brooklyn Bridge carries the Pacific Motorway (M1). The Peats Ferry Bridge is a single carriageway with one lane in each direction in state highway conditions; and permits the carriage of motor vehicles, pedestrians and bicycles. The adjacent Brooklyn Bridge is a dual carriageway with three lanes in each direction of motorway grade-separated conditions. Both bridges are maintained by Transport for NSW.

Spectacle Island is a 36.4-hectare (89.9-acre) island in the village of Mooney Mooney that is located in the Hawkesbury River on the Central Coast of New South Wales, Australia. Spectacle Island is located on the junction with Mooney Mooney Creek and the Hawkesbury River. Spectacle Island is one of the two islands located in Mooney Mooney along with Peat Island. It is considered a protected nature reserve precinct and is part of the Brisbane Water National Park.

Cogra Bay is a suburb of the Central Coast region of New South Wales, Australia, located on the north bank of the Hawkesbury River 51 kilometres (32 mi) north of Sydney. It is part of the Central Coast Council local government area. Cogra Bay is bounded by the Hawkesbury River to the south, the mouth of the Mooney Mooney Creek to the west, Mullet Creek to the east, and the Brisbane Water National Park to the north. It consists of a number of properties accessible only by boat or by water taxi less than 10 minutes from Brooklyn on the southern side of the Hawkesbury River. Although, due to shallow water in some parts of the bay, there may be limited access at low tide. Cogra Bay residents enjoy an off-grid lifestyle, using solar power and rain water tank storage. The nearest railway stations are Brooklyn and Wondabyne.

The Muogamarra Nature Reserve () is a protected nature reserve that is located in the Sydney region of New South Wales, in eastern Australia. The 2,274-hectare (5,620-acre) reserve is situated in the northern edge of Sydney and lies between the suburb of Cowan to the south, and the Hawkesbury River to the north.

The Berowra Creek, a watercourse that is part of the Hawkesbury-Nepean catchment, is located to the north of the Sydney central business district in the Hornsby Shire of New South Wales, Australia.