The Impey River is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...

in the

Mid West The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four Census Bureau Region, census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of ...

region of

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

which rises south of Mount Murchison and flows east-north-east until it merges with the Murchison River of which it is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drai ...

. The first recorded sighting of the river was by surveyor Robert Austin during an expedition in 1857. In 1858 the river was named by explorer

Francis Gregory Francis Hoyt Gregory (October 9, 1789 – October 4, 1866) was an officer in the United States Navy during the War of 1812 through to the Civil War, serving then as a rear admiral. Early life Gregory was born in Norwalk, Connecticut, the son of ...

after the prominent

geologist A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, althoug ...

, Sir Roderick Impey Murchison.

References

Rivers of the Mid West region {{WesternAustralia-river-stub