Water Quality - Diatom Algae - All MeasurementsQualité des eaux - Algues diatomées - Toutes mesures
Qualité des eaux - Algues diatomées - Toutes mesuresWater Quality - Diatom Algae - All Measurements
This dataset from the Geneva canton's territorial information system (SITG) provides water quality measurements based on diatoms, microscopic algae that grow on stones in watercourses. Samples are collected twice a year at each monitoring station using a special brush. Water quality is assessed using a diatom-based biological index, which reflects the ecological condition of rivers and streams. The dataset covers all recorded measurements from monitoring stations across the canton of Geneva, Switzerland, and is intended for environmental monitoring and assessment of surface water ecological status at the local level.”}Les algues utilisées pour diagnostiquer la qualité de l'eau sont des algues microscopiques vivant sur les cailloux et appelées diatomées. Elles sont récoltées à l'aide d'une brosse spéciale dans chaque station 2 fois par année. La méthode utilisée pour déterminer la qualité de l'eau est l'indice su…
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Data schema (10 fields)
Click a field to see example values.
| Field | Type | Description |
|---|---|---|
| OBJECTID | oid | Internal unique record identifier.Internal unique record identifier. |
| CODEMESURE | string | Unique code identifying the measurement point and campaign.Unique code identifying the measurement point and campaign. |
| NOM_STATIONNom station | string | Name of the monitoring station.Name of the monitoring station. |
| COURS_EAUCours eau | string | Name and code of the watercourse.Name and code of the watercourse. |
| ANNEE_MESUREAnnee mesure | integer | Year the measurement was taken.Year the measurement was taken. |
| DI_CH_CLASSEDi ch classe | string | Water quality class derived from the diatom index.Water quality class derived from the diatom index. |
| DI_CHDi ch | double | Numeric value of the Swiss diatom index (DI-CH).Numeric value of the Swiss diatom index (DI-CH). |
| NB_CAMPAGNESNb campagnes | integer | Number of sampling campaigns conducted that year.Number of sampling campaigns conducted that year. |
| DISPLAY_FIELDDisplay field | string | Combined station name and year for display purposes.Combined station name and year for display purposes. |
| LIEN_FICHELien fiche | string | Link to the PDF monitoring report for this measurement.Link to the PDF monitoring report for this measurement. |
Schema captured from arcgis 2 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)
Record 1DI_CH: 6.3 · OBJECTID: 1
{
"DI_CH": 6.3,
"OBJECTID": 1,
"COURS_EAU": "Avril (Nant d') - 106",
"CODEMESURE": "R106K3850P0",
"LIEN_FICHE": "https://ge.ch/sitg/geodata/SIEAU/QUALITE/FICHES_MONITORING/2020/R106K3850P0.pdf",
"NOM_STATION": "Zimeysa",
"ANNEE_MESURE": 2020,
"DI_CH_CLASSE": "Médiocre",
"NB_CAMPAGNES": 2,
"DISPLAY_FIELD": "Zimeysa / 2020"
}Record 2DI_CH: 3.98 · OBJECTID: 2
{
"DI_CH": 3.98,
"OBJECTID": 2,
"COURS_EAU": "Lion (Ruisseau Le ) - 810",
"CODEMESURE": "R810K204P0",
"LIEN_FICHE": "https://ge.ch/sitg/geodata/SIEAU/QUALITE/FICHES_MONITORING/2017/R810K204P0.pdf",
"NOM_STATION": "Vésegnin (F-01)",
"ANNEE_MESURE": 2017,
"DI_CH_CLASSE": "Bonne",
"NB_CAMPAGNES": 2,
"DISPLAY_FIELD": "Vésegnin (F-01) / 2017"
}Record 3DI_CH: 3.93 · OBJECTID: 3
{
"DI_CH": 3.93,
"OBJECTID": 3,
"COURS_EAU": "Lion (Ruisseau Le ) - 810",
"CODEMESURE": "R810K204P0",
"LIEN_FICHE": "https://ge.ch/sitg/geodata/SIEAU/QUALITE/FICHES_MONITORING/2017/R810K204P0.pdf",
"NOM_STATION": "Vésegnin (F-01)",
"ANNEE_MESURE": 2011,
"DI_CH_CLASSE": "Bonne",
"NB_CAMPAGNES": 3,
"DISPLAY_FIELD": "Vésegnin (F-01) / 2011"
}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_HYB_TM_DICH/FeatureServer
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_HYB_TM_DICH/FeatureServer?f=json' -H 'Accept: application/json'Service definition: the list of layers.
Dataset
Volume & freshness
Machine-readable & source
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