Free-flowing river segments with outstanding values assessed for potential Wild and Scenic River designation, maintained by the National Park Service. 2024 update with expanded coverage.
4,496 segments | LineString | National (including Alaska, Hawaii, Puerto Rico)
Source: NPS Nationwide Rivers Inventory
PMTiles source-layer name: nri-2024
Line features were hexed to H3 resolution 8 by buffering each segment by the H3 cell circumradius before polyfill.