Cannabis Ruderalis October 12, 2016 thcscience_admin River in BrazilJufari RiverLocationCountryBrazilPhysical characteristicsSource • locationAmazonas state Jufari River is a river forming part of the border between Amazonas and Roraima states in north-western Brazil. See also[edit] List of rivers of Amazonas List of rivers of Roraima References[edit] Brazilian Ministry of Transport 1°13′S 61°59′W / 1.217°S 61.983°W / -1.217; -61.983