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The agency's responsibilities include the non-tidal River Thames, the Medway Navigation, River Wye and River Lugg, the Royal Military Canal and the Fens and Anglian systems. The Environment Agency is organising the Fens Waterways Link a major construction project to link rivers in the Fens and Anglian Systems for navigation.
The National Rivers Authority (NRA) was one of the forerunners of the Environment Agency of England and Wales, existing between 1989 and 1996.. Before 1989 the regulation of the aquatic environment had largely been carried out by the ten regional water authorities (RWAs).
As a result, all the locks and weirs on the river, except the semi-tidal Richmond Lock, are owned and operated by the Environment Agency. Richmond Lock is managed by the Port of London Authority. Most of the Environment Agency's locks and weirs are staffed by a lock keeper, who often lives in a house adjacent to the lock. The lock keeper's ...
The Environment Agency measures the water quality of the river systems in England. Each is given an overall ecological status, which may be one of five levels: high, good, moderate, poor and bad. There are several components that are used to determine this, including biological status, which looks at the quantity and varieties of invertebrates ...
The first lock was built of stone by Daniel Harris for the Thames Navigation Commission in 1790. [2] Across the weir pool is a large Environment Agency complex which monitors the River Thames, while a small office building exists on the front lawn opposite from the lock house.
The Act made special provision for the River Thames and Lee Conservancy catchment boards, enabling them to act as if they were river authorities and their catchment areas were river authority areas. There was also special provision for parts of London , defined as the London excluded area under section 125 of the Act.
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Today the PLA acts mainly as a managing authority for the tidal stretch of the River Thames, ensuring safe navigation, and the well-being of the port and its activities. Comparable responsibilities for the river including, and upstream of, Teddington Lock fall to the Environment Agency.