... below shows the total economic impact of hunting, fishing and wildlife watching on NFS managed land in the United States, based on 200 0-2 003 survey data and analysis of spending within the state ... recreations, including bicycling, camping, fishing, hunting, paddling, snow sports, trail use and wildlife viewing. Unfortunately there are other outdoor sports that are not included in this ... 10% of the GDP in 2009 when land in the contiguous United States is tallied. Although Ingraham and Foster (2008) specifically did not include National Wildlife Refuges in Alaska and Hawaii (and...