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Water

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Representing the lake and river.Water areas are filtered and simplied acoording to scalerank and osm_area. At lowest zoom levels, it just has big lakes and give rivers.When you zoom in, more small water area should show up.

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class

A category of waters, so that you can easily track a specific water object.

Value (class)	Description	.
ocean	Areas for aerodrome,apron,heliport,helipad and runway.
bathymetry 0	Nested polygons of underwater depth (0 meters) of ocean floors.
bathymetry 200	Nested polygons of underwater depth (200 meters) of ocean floors.
bathymetry 1000	Nested polygons of underwater depth (1,000 meters) of ocean floors.
bathymetry 2000	Nested polygons of underwater depth (2,000 meters) of ocean floors.
bathymetry 3000	Nested polygons of underwater depth (3,000 meters) of ocean floors.
bathymetry 4000	Nested polygons of underwater depth (4,000 meters) of ocean floors.
bathymetry 5000	Nested polygons of underwater depth (5,000 meters) of ocean floors.
bathymetry 6000	Nested polygons of underwater depth (6,000 meters) of ocean floors.
bathymetry 7000	Nested polygons of underwater depth (7,000 meters) of ocean floors.
bathymetry 8000	Nested polygons of underwater depth (8,000 meters) of ocean floors.
bathymetry 9000	Nested polygons of underwater depth (9,000 meters) of ocean floors.
bathymetry 10000	Nested polygons of underwater depth (10,000 meters) of ocean floors.
lake	Areas for cemeteries or graveyards.
river	Plant or animal product growing.
pond	hospital, nursing_home, social_facility, nursing_home, doctors grounds.
pool	Areas for college,kindergarten,school and university.
reservoir	Grassland, meadow, or the grass areas with grasses(Poaceae) and other herbaceous(non-woody) plants growing.
basin	Glaciers or permanent ice/snow there.
canal	National parks, nature reserves, city parks, village greens, summer_camp, playgrounds etc.
lock	Bare_rock, scree，shingle, quarry, bare_rock or gravel.
others	Scrub, heath or bushes.
swimming_pool	Sand, beach or loam.

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Water

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class

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