Cedar Pocket, and two weirs (Talegalla and Teddington) and a barrage on Tinana Creek. It is also a historical Australian river that contains gold as was first discovered in Gympie by James Nash. 2011 floods The Mary River experienced major flooding during the 2010–2011 Queensland floods. In some places the river rose . In Maryborough the river peaked at while at Gympie the peak was . The Bruce Highway was closed to the north and south of Gympie and more than 50 homes and businesses were inundated. The high turbidity levels interfered with the natural breeding cycle for some of the river species. Flora and fauna The endangered Mary River turtle (Elusor macrurus) lives in the river. Other marine life native to the river include the Queensland lungfish (Neoceratodus forsteri) and the endangered Mary River cod (Maccullochella mariensis). Significant vulnerable and endangered species that live in the river also include endangered giant barred frog, Cascade tree frog and Coxen's fig parrot and the vulnerable tusked frog, honey blue-eye fish, the Richmond birdwing butterfly and the Illidge's ant blue butterfly. Saltwater crocodiles are occasionally seen in the lower reaches of the river, with one notable crocodile being known to live in the river since April 2012. Although the official range for saltwater crocodiles stops near Gladstone, it is widely regarded that the Mary River is the most southerly range limit for crocodiles. Traveston Crossing Dam In light of the region's longest drought in one hundred years, the Queensland Government announced on 27 April 2006 its intention to dam part of the Mary River at Traveston Crossing, south of Gympie. The project was cancelled in November 2009, after being refused approval by Federal Environment Minister Peter Garrett. The action had been planned to create a reservoir "almost as big as the Wivenhoe Dam" by 2011. The Traveston Dam was projected to inundate an area of fertile farmland, endangered regional ecosystems and small towns more than 1.3 times the area of Sydney Harbour. There was considerable local opposition to the proposal, with all Mary Valley and Sunshine Coast Shire Councils opposed to the dam proposal on a variety of grounds including: the dislocation of the local community from the inundated area; adverse effects on downstream communities; and environmental impacts such as the removal of one of the few remaining habitats for the vulnerable Queensland Lungfish. More than 20,000 residents formally petitioned the Queensland