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Rivers of North America

Vector data downloaded from Natural Earth Link.

Data was imported in a PostGIS database. The river layer is dynamically generated with the following query:

SELECT 
  ST_AsGeoJSON(ST_Transform(geom, 4326), 5)
AS 
  geometry, name, scalerank
FROM 
  ne.ne_10m_rivers_lake_centerlines_scale_rank
WHERE 
  ST_Intersects(ST_Transform(geom, 4326), 
  (SELECT 
    ST_Union(ST_Transform(geom, 4326)) 
  FROM 
    ne.ne_10m_admin_0_countries_lakes 
  WHERE 
    continent = 'North America'))

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