Description
The hydrographic division is the set of four hierarchical partitions of the French territory made according to decreasing hydrographic areas:
- hydrographic region (1st order),
- hydrographic sector (2nd order),
- hydrographic subsector (3rd order),
- hydrographic zone (4th order).
A hydrographic region is divided into a maximum of 10 sectors.
The list of hydrographic regions was adopted in Circular No. 91-50 of 12 February 1991 but the determination of their limits is the responsibility of the Water Agencies.
The geometry is close to the BDTopo IGN that was used for its realization.The BDCarthage Réunion is maintained by the DEAL Réunion.The BD Carthage Réunion is a version validated by the SIE but not by the IGN and that therefore problems of incompatibility with IGN referentiels can occur (and that an update will "officialize" the BD Carthage with the IGN validation).
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| RegionHydro | Unknown | Open resource | |
| Consult the dictionary "Hydrographic reference system (ETH)" on the Sandre website | Unknown | Open resource | |
| Download data - MIF/MID format | Unknown | Open resource | |
| Downloading data - Format ESRI Shapefile | Unknown | Open resource | |
| Consult the content description of the comic CARTHAGE | Unknown | Open resource |