Water layer - Lemap1/geoclimate GitHub Wiki
The water layer represents any kind of surface (river, sea, lake...)
| 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; in type list | Type of water |
| zindex | INTEGER | not null ; ≥ 0 ; ≤ 1 | Defines the position with respect to the ground. 0 indicates that the object is on the ground. 1 indicates that the object is above the ground surface. |
type column values
List of all possible values for type column.
| Term | Definition | Source |
|---|---|---|
| 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 | 2 |
| bay | An inlet of a sea or lake which is mostly surrounded by land, | 3 |
| lake | A large body of water localized in a basin surrounded by dry land | 4 |
| lagoon | A shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses | 5 |
| mangrove | Water part of a mangrove (see vegetation layer) | 6 |
| pond | A small area of fresh water | 7 |
| basin | An area artificially graded to hold water. | 8 |
| water | Any water area | - |