Tank Stream - Macquarie Street To Circular Quay 

In October 1788, a timber bridge was built to span the Tank stream At Is Spot, which was On The Head Of Sydney Cove. In 1803 1804 the structure was replaced by Stonebridge

When GovernorPhilip inspected Port Jackson in January 1788 he was induced to start a settlement there because of the rivulets at The Head Of Sydney Cove  Where Wild celery parsley and spinach flourished healthy vegetables for scurvy patients. A swampy spring, 1 mile away, in the centre of today's Hyde Park, was  the birthplace of this rivulet which fell 100 feet As it wandered Eastward over sandstone Rocks To King Street, And Another 1 At Kings St another at Spring Street, it flowed to Bridge Street, the head of the tidal estuary

To save the life stream, Governor Philip in March 1788 wisely decreed that the run of water which supplies the settlement was observed to be only a drain from the swamp. To protect it from the sun, the governor forbids the cutting down of any tree within 50 feet of the run, then which there has not been a fine are found in any one of the coves of the harbour.

February 1791 surveyor Alt deepened the stream near Bridge Street, and in April 1792 the governor had ditches dug flanking The Rivulet. A Paling fence was erected to keep out stock andcherish the shrubs growing on its banks. The rivulet was christened the tank stream in May 1792 after his Excellency had convicts hew a tank from sandstone which has Held 8000 gallons of water. Bridge St where the tank stream debouched into the tidal waters of Sydney Code, became the main link between the Eastern the west Sydney. Collins in October 1788 Stated that a gang Of convicts were employed in rolling timber together to form a bridge over the stream at the head of the Cove. Soon footbridge spanned the