EnviroAtlas - Bird Watching Recreation Demand by 12-Digit HUC in the Conterminous United States

This EnviroAtlas dataset includes the total number of recreational days per year demanded by people ages 18 and over for bird watching by location in the contiguous...本环境地图集（EnviroAtlas）数据集包含美国本土范围内各区域内，18岁及以上人群每年观鸟活动所需的休闲天数总量。