Three Rivers District Council is the local authority for the Three Rivers non-metropolitan district of England, the United Kingdom. Three Rivers is located in the south-west of Hertfordshire, in the East of England region. The Council itself is based in Rickmansworth, the largest settlement in the district, but also comprises Abbots Langley, Chorleywood, Croxley Green, Maple Cross, Mill End, Sarratt and South Oxhey.