 Its highest recorded rainfall was in one day.Toonumbar National Park was part of the successful Githabul Nation native title claim.The Native title claimant Trevor Close an Aboriginal lawyer fought the NSW Government fifteen years probono to win the historic Native Title claim in memory of his grandfather Rory Close and his children Nea Close, Marnie Close Sera Close, Issiah Close and Tomika Close, Yartha Close and Kory Close.