upland to nlcd open water
收藏US Fish and Wildlife Service Open Data2026-03-28 收录
下载链接：
https://gis-fws.opendata.arcgis.com/datasets/fws::upland-to-nlcd-open-water
下载链接
链接失效反馈官方服务：
资源简介：
<span style='color:rgb(74, 74, 74); font-family:"Source Sans Pro", sans-serif; font-size:16px;'><b>Upland to Open Water Difference Product for HUC12 subwatersheds in the contiguous U.S. </b></span><div><span style='color:rgb(74, 74, 74); font-family:"Source Sans Pro", sans-serif; font-size:16px;'><br /></span></div><div><span style='color:rgb(74, 74, 74); font-family:"Source Sans Pro", sans-serif; font-size:16px;'>Watersheds with ≤0.5% of upland to open water difference, calculated by area, are displayed in light blue, while those that have greater than 2% difference are displayed in dark blue. <i>The </i></span><span style='color:rgb(74, 74, 74); font-family:"Source Sans Pro", sans-serif; font-size:16px;'><i>≤0.5% category is filtered out in many web maps to improve performance. </i></span></div><div><span style='color:rgb(74, 74, 74); font-family:"Source Sans Pro", sans-serif; font-size:16px;'><br /></span></div><div><span style='color:rgb(74, 74, 74); font-family:"Source Sans Pro", sans-serif; font-size:16px;'>Patterns are largely controlled by the age of National Wetlands Inventory (NWI) data and land cover trends, including the addition or increase in pond and lake area via natural and anthropogenic forces. Areas exhibiting the greatest amount of difference (i.e., change) include the Prairie Pothole Region and the southeastern U.S. Geographies with the greatest levels of difference could be prioritized for NWI updates.</span><span style='color:rgb(74, 74, 74); font-family:"Source Sans Pro", sans-serif; font-size:16px;'> </span></div>
提供机构：
U.S. Fish & Wildlife Service
