Water Layer

The water layer represents any kind of surface (river, sea, lake, etc.).

Name

Type

Constraints

Definition

the_geom

POLYGON

X Y dimensions

Geometry

id_water

INTEGER

Primary Key

Unique Identifier

id_source

VARCHAR

not null

Identifier of the feature from the input datasource

type

VARCHAR

not null; value must be in the [type list]_

Type of water

zindex

INTEGER

not null; ≥ 0; ≤ 1

Defines position relative to ground: 0 = on ground, 1 = above ground

intermittent

BOOLEAN

True or False

Defines whether the water is intermittent or permanent

Type Column Values

List of possible values for the type column:

  • aqueduct A watercourse constructed to carry water from a source to a distribution point far away.

  • canal An artificial open flow waterway used to carry useful water for transportation, waterpower, or irrigation. (See: https://wiki.openstreetmap.org/wiki/Tag:waterway%3Dcanal)

  • bay An inlet of a sea or lake mostly surrounded by land. (See: https://wiki.openstreetmap.org/wiki/Tag:natural%3Dbay)

  • lake A large body of water localized in a basin surrounded by dry land. (See: https://wiki.openstreetmap.org/wiki/FR:Tag:natural%3Dwater)

  • lagoon A shallow body of water separated from a larger body of water by a narrow landform such as reefs or barrier islands. (See: https://wiki.openstreetmap.org/wiki/Tag:natural=tree)

  • mangrove Water part of a mangrove (see vegetation layer). (See: https://wiki.openstreetmap.org/wiki/Tag:natural=tree)

  • pond A small area of fresh water. (See: https://wiki.openstreetmap.org/wiki/Tag:natural=tree)

  • basin An area artificially graded to hold water. (See: https://wiki.openstreetmap.org/wiki/Key%3Abasin)

  • water Any water area.

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