# Hydrografie (INSPIRE geharmoniseerd). Schema of Watercourse (Polygon)

The table below describes the fields present in this collection. This information is also available as 

[JSON Schema](https://api.pdok.nl/kadaster/brt-hydrografie/ogc/v1/collections/watercourse_polygon/schema?f=json).

[Queryables](https://api.pdok.nl/kadaster/brt-hydrografie/ogc/v1/collections/watercourse_polygon/queryables).

| Property | Type | Required | Description |
|---|---|---|---|
| id | uuid | yes | The unique identifier of this feature. This ID should be stable over time and always refer tot the same feature. |
| begin_lifespan_version | string | no |  |
| geographical_name | string | no |  |
| geometry | polygon | no |  |
| local_id | string | no |  |
| lowerwidth | double | no |  |
| namespace | string | no |  |
| persistence | string | no |  |
| upperwidth | double | no |  |