The River Lee or River Lea (both spellings are in general use) is a river in England. It originates at Luton in the chalk beds of the northeast Chiltern Hills and flows generally east and then south to London where it meets the River Thames - the last section being known as Bow Creek.
A boat race on the River Lea
The spelling Lea is predominant west (upstream) of Hertford, but both spellings are used from Hertford to the River Thames; the Lee Navigation was established by Acts of Parliament and should be so spelt.
Inside Greater London, the Lee passes a series of reservoirs: King George's Reservoir at Brimsdown, William Girling Reservoir at Edmonton and the Banbury Reservoir at Tottenham. At Tottenham Hale there is a connected set of reservoirs; Lockwood Reservoir, High Maynard Reservoir, Low Maynard Reservoir, Walthamstow Reservoirs and Warwick Reservoirs. It also passes the Three Mills.
The RiverLea forms, for the greater part, the western boundary of the borough, flowing past the numerous reservoirs constructed in the Lea Valley between 1893 and 1951.
The Old RiverLea forms the borough boundary with Hackney at Hackney Marshes, and follows the original course of the RiverLea from Lea Bridge weir.
LeaRivers Trust have been working with conservation volunteers to clear rubbish and control invasive species in the Marsh Lane and Ive Farm Lane areas bounding the brook.