Curvilinear kilometrage of watercoursesKilométrage curviligne des cours d'eau
Kilométrage curviligne des cours d'eauCurvilinear kilometrage of watercourses
This API provides a geospatial dataset marking curvilinear distances along the axis and banks of watercourses in the canton of Geneva, Switzerland. Derived by linear segmentation of the regional water network graph (Graphe Eau), the layer contains a reference point every 25 metres along all watercourses in the Geneva region. It is published by the Système d'information du territoire genevois (Geneva territorial information system) and offers free access without authentication, supporting hydrological mapping, distance measurement, and spatial referencing along rivers and streams.Le kilométrage curviligne matérialise les distances le long de l'axe et des rives des cours d'eau. Obtenue par segmentation linéaire du Graphe Eau, cette couche contient un point tous les 25 m sur l'ensemble des cours d'eau de la région genevoise.
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Data schema (9 fields)
Click a field to see example values.
| Field | Type | Description |
|---|---|---|
| OBJECTID | oid | Internal record identifier.Internal record identifier. |
| COURS_EAUCours eau | string | Name and segment number of the watercourse.Name and segment number of the watercourse. |
| CODE_SEGCode seg | integer | Code identifying the watercourse segment.Code identifying the watercourse segment. |
| DISTANCE_CURVILIGNEDistance curviligne | double | Curvilinear distance in metres along the watercourse from its origin.Curvilinear distance in metres along the watercourse from its origin. |
| INTERVALLE | string | Spacing interval between consecutive points, in metres.Spacing interval between consecutive points, in metres. |
| COORDONNEE_XCoordonnee x | double | X coordinate of the point in the Swiss coordinate system.X coordinate of the point in the Swiss coordinate system. |
| COORDONNEE_YCoordonnee y | double | Y coordinate of the point in the Swiss coordinate system.Y coordinate of the point in the Swiss coordinate system. |
| ANGLE | double | Direction angle of the watercourse axis at the point, in degrees.Direction angle of the watercourse axis at the point, in degrees. |
| SHAPE | geometry | Point geometry representing the location on the watercourse.Point geometry representing the location on the watercourse. |
Schema captured from arcgis 28 days ago.
Query the data
Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.
Sample data (3 records)
| OBJECTID | COURS_EAU | CODE_SEG | DISTANCE_CURVILIGNE | INTERVALLE | COORDONNEE_X | COORDONNEE_Y | ANGLE |
|---|---|---|---|---|---|---|---|
| 1 | Hermance (Rivière L') - 4 | 401 | 13125 | 25 [m] | 2513180.2713 | 1124222.6882 | 54.46 |
| 2 | Rhône (Fleuve le ) - 2 | 201 | 25150 | 50 [m] | 2485503.6168 | 1110168.2936 | 316.48 |
| 3 | Rhône (Fleuve le ) - 2 | 201 | 8900 | 100 [m] | 2495235.9555 | 1117890.3087 | 322.26 |
Live sample captured at profiling time — values may have changed upstream.
Verification Status
Using the API
Configuration
- Base URL
- https://vector.sitg.ge.ch/arcgis/rest/services/LCE_KM_CURVILIGNE/MapServer
License
Terms stated by the source (not a recognized license):
© 2026 SITG
Query examples
curl -s 'https://vector.sitg.ge.ch/arcgis/rest/services/LCE_KM_CURVILIGNE/MapServer?f=json' -H 'Accept: application/json'Service definition: the list of layers.
Dataset
Volume & freshness
Machine-readable & source
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