Collarenebri is a town in north western New South Wales, Australia. The town is in the Walgett Shire Local Government Area and is situated o…Collarenebri is a town in north western New South Wales, Australia. The town is in the Walgett Shire Local Government Area and is situated on the Barwon River approximately 75 kilometres northeast of Walgett and south west of Mungindi on the Gwydir Highway. It is 16 km from Pokataroo which was the nearest railway town prior to closure of the rail service there. The town is 146 metres above sea level. Collarenebri is one of three towns ending in 'BRI' in Northern New South Wales.