Monitoring network
France monitoring network
Hydrionis holds continuous records from 1,542 monitoring locations in France, the earliest opening in 1877.
1,542
Monitoring locations
1,527,764
Observations held
1877–2026
Record span
3
Kinds of measurement
Where the network is
France monitoring network
896 river gauges · 641 observation boreholes · 5 sampling and rain gauges
400 of 646 locations drawn, sampled evenly across the network so the map stays a reasonable size and still shows where coverage is dense and where it is thin. Every location is held in full and reachable through the data.
What is measured
| Measurement | Locations | Values held |
|---|---|---|
| Mean monthly river flow | 896 | 646,543 |
| Groundwater level | 641 | 271,228 |
| Daily precipitation | 5 | 205,648 |
| Daily maximum air temperature | 5 | 194,107 |
| Daily minimum air temperature | 5 | 192,774 |
| Snow depth | 5 | 1,014 |
What kind of place is monitored
| Kind | Locations |
|---|---|
| River gauges | 896 |
| Observation boreholes | 641 |
| Sampling and rain gauges | 5 |
Elsewhere
All networks · the underlying series are published through the dataset catalogue and the static API.