<P> Since the early 2000s, dredging machines have operated at the Murray Mouth, moving sand from the channel to maintain a minimal flow from the sea and into the Coorong's lagoon system . Without the 24 - hour dredging, the Mouth would silt up and close, cutting the supply of fresh sea - water into the Coorong, which would then warm up, stagnate and die . </P> <P> Being one of the major river systems in one of the driest continents of Earth, the Murray has significant cultural relevance to Indigenous Australians . According to the peoples of Lake Alexandrina, the Murray was created by the tracks of the Great Ancestor, Ngurunderi, as he pursued Pondi, the Murray Cod . The chase originated in the interior of New South Wales . Ngurunderi pursued the fish (who, like many totem animals in Aboriginal myths, is often portrayed as a man) on rafts (or lala) made from red gums and continually launched spears at his target . But Pondi was a wily prey and carved a weaving path, carving out the river's various tributaries . Ngurunderi was forced to beach his rafts, and often create new ones as he changed from reach to reach of the river . </P> <P> At Kobathatang, Ngurunderi finally got lucky, and struck Pondi in the tail with a spear . However, the shock to the fish was so great it launched him forward in a straight line to a place called Peindjalang, near Tailem Bend . Eager to rectify his failure to catch his prey, the hunter and his two wives (sometimes the escaped sibling wives of Waku and Kanu) hurried on, and took positions high on the cliff on which Tailem Bend now stands . They sprung an ambush on Pondi only to fail again . Ngurunderi set off in pursuit again, but lost his prey as Pondi dived into Lake Alexandrina . Ngurunderi and his women settled on the shore, only to suffer bad luck with fishing, being plagued by a water fiend known as Muldjewangk . They later moved to a more suitable spot at the site of present - day Ashville . The twin summits of Mount Misery are supposed to be the remnants of his rafts, they are known as Lalangengall or the two watercraft . </P> <P> Remarkably, this story of a hunter pursuing a Murray cod that carved out the Murray persists in numerous forms in various language groups that inhabit the enormous area spanned by the Murray system . The Wotojobaluk people of Victoria tell of Totyerguil from the area now known as Swan Hill who ran out of spears while chasing Otchtout the cod . </P>

Where does the murry river start and end