River Colne, Essex

Colne
The River Colne in Colchester, looking south
Location
CountryEngland
RegionEssex
CityColchester
Physical characteristics
Source 
  locationnear Cornish Hall End
  coordinates52°00′52″N 0°26′19″E / 52.0144°N 0.4387°E / 52.0144; 0.4387
  elevation104 m (341 ft)
MouthNorth Sea
  location
Brightlingsea
  coordinates
51°48′03″N 1°00′37″E / 51.8007°N 1.0102°E / 51.8007; 1.0102
  elevation
0 m (0 ft)
Length62 km (39 mi)

The River Colne ( /kn/ or /kln/) is a small river that runs through Essex, England and passes through Colchester. It is not a tributary of any other river, instead having an estuary that joins the sea near Brightlingsea. The river's name is of Celtic origin, combining the word for rock "cal" with a remnant of the word "afon", or river, giving the meaning "stony river". However, another authority states that the river's name was originally Colonia Fluvius, the "waterway of the Colonia": a reference to Colchester's status in Roman times. There are two other rivers in the UK that share the same name.