Topographic watersheds of runoff flow paths on Rennes MétropoleBassins versants topographiques des axes de ruissellement sur Rennes Métropole

Name: Topographic watersheds of runoff flow paths on Rennes Métropole
Creator: opendatasoft

Bassins versants topographiques des axes de ruissellement sur Rennes MétropoleTopographic watersheds of runoff flow paths on Rennes Métropole

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This dataset complements the layer of runoff flow paths across Rennes Métropole, derived through topographic analysis. It was produced as part of a runoff study conducted by Rennes Métropole between 2023 and 2025, which included an initial analysis of how surface water drains across the territory. The layer delineates topographic watersheds associated with identified runoff axes, providing a basis for understanding drainage patterns and supporting local water management and flood-risk assessment work carried out by the metropolitan authority.Cette couche vient en complément à la couche des axes de ruissellement sur Rennes Métropole (UUID = e0fa5c09-ee44-46ff-a068-b6dada575c9f) par analyse topographique. Dans le cadre de l'étude de ruissellement actuellement menée par Rennes Métropole (2023-2025), une première analyse du fonctionnemen...

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fair

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Data schema (5 fields)

Filterable via the API (3)

gml_idid_sb_verssurface_km2

Click a field to see example values.

Field	Type	Description
geo_point_2dGeo Point	geo_point_2d	Geographic centroid coordinates of the catchment basin.Geographic centroid coordinates of the catchment basin.
geo_shapeShape	geo_shape	Geometric polygon outlining the catchment basin boundary.Geometric polygon outlining the catchment basin boundary.
gml_idGml id	text	Unique GML identifier of the sub-catchment basin feature.Unique GML identifier of the sub-catchment basin feature.
id_sb_versId sb vers	int	Numeric identifier of the sub-catchment basin.Numeric identifier of the sub-catchment basin.
surface_km2Surface km2	double	Area of the catchment basin in square kilometres.Area of the catchment basin in square kilometres.

Schema captured from opendatasoft 7 days ago.

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Sample data (5 records)

Record 1gml_id: sous_bassin_versant.36 · geo_shape: [large value omitted]

{
  "gml_id": "sous_bassin_versant.36",
  "geo_shape": "[large value omitted]",
  "id_sb_vers": 36,
  "surface_km2": 132.1,
  "geo_point_2d": {
    "lat": 48.227434450310504,
    "lon": -1.7891527169842005
  }
}

Record 2gml_id: sous_bassin_versant.139 · geo_shape: [large value omitted]

{
  "gml_id": "sous_bassin_versant.139",
  "geo_shape": "[large value omitted]",
  "id_sb_vers": 139,
  "surface_km2": 298.6,
  "geo_point_2d": {
    "lat": 48.141016101946065,
    "lon": -1.7889654435404865
  }
}

Record 3gml_id: sous_bassin_versant.141 · geo_shape: [large value omitted]

{
  "gml_id": "sous_bassin_versant.141",
  "geo_shape": "[large value omitted]",
  "id_sb_vers": 141,
  "surface_km2": 504.3,
  "geo_point_2d": {
    "lat": 48.133403035206584,
    "lon": -1.8775147664376879
  }
}

Record 4gml_id: sous_bassin_versant.354 · geo_shape: [large value omitted]

{
  "gml_id": "sous_bassin_versant.354",
  "geo_shape": "[large value omitted]",
  "id_sb_vers": 354,
  "surface_km2": 506,
  "geo_point_2d": {
    "lat": 47.926507345684506,
    "lon": -1.652739423531729
  }
}

Record 5gml_id: sous_bassin_versant.318 · geo_shape: [large value omitted]

{
  "gml_id": "sous_bassin_versant.318",
  "geo_shape": "[large value omitted]",
  "id_sb_vers": 318,
  "surface_km2": 291.5,
  "geo_point_2d": {
    "lat": 47.99582485474651,
    "lon": -1.6113895118448789
  }
}

Live sample captured at profiling time — values may have changed upstream.

Verification Status

Using the API

Configuration

Base URL: https://data.rennesmetropole.fr/api/explore/v2.1/catalog/datasets/bassin_versant_topographique

License

Open Data Commons Open Database License 1.0Open

✓ Redistributable
✓ Attribution required

Query examples

curl -s 'https://data.rennesmetropole.fr/api/explore/v2.1/catalog/datasets/bassin_versant_topographique/records?limit=20' -H 'Accept: application/json'

First 20 records of the dataset as JSON.

Uses the Opendatasoft Explore v2.1 syntax — supports select, where, group_by and order_by.

Full API documentation ↗

Rate limits

7 000 req/day

per ipmeasured

observed 7 days ago

Dataset

Volume & freshness

Records

354

Last upstream update

8 days ago

2026-09-01

License

No license declared upstream.

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Source: opendatasoft

Machine-readable & source

JSON

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