 In 1991 , the Bureau of Land Management approved a new grazing <unk> management plan . It was based on the agreements made by the <unk> Creek Mountain Working Group , and it took effect in 1992 . Since then , vegetation in riparian areas of the <unk> Creek Mountains has recovered , and studies by the United States Fish and Wildlife Service have found that the <unk> <unk> trout population , still listed as threatened , is also recovering . 
