In what year was the River Lea constructed as part of the London water supply infrastructure?
River Lea The River Lea in England originates in Marsh Farm, Leagrave, Luton in the Chiltern Hills and flows generally southeast, east, and then south through east London where it meets the River Thames, the last section being known as Bow Creek. It is one of the largest rivers in London and the easternmost major tributary of the Thames. Its valley creates a long chain of marshy ground along its lower length, much of which has been used for gravel and mineral extraction, reservoirs and industry. Much of the river has been canalised to provide a navigable route for boats into eastern Hertfordshire, known as the Lee Navigation. While the lower Lea remains somewhat polluted, its upper stretch and tributaries, classified as chalk streams, are a major source of drinking water for London. A diversion known as the New River, opened in 1613, abstracts clean water away from the lower stretch of the river for drinking. Its origins in the Chilterns contribute to the extreme hardness (high mineral content) of London tap water.
City Road Basin The City Road Basin is an English canal basin and part of the Regent's Canal in London, owned by the Canal & River Trust. It opened in 1820, and made a large contributuion to the prosperity of the Regent's Canal. By the 1950s, its surroundings were largely derelict, but a programme of regeneration began in 2004, involving several large-scale residential developments, and public access to the basin was provided for the first time in 2009. The basin is used for canoeing by the Islington Boat Club.