Data Sources & Licences
Attribution and licence information for selected map data used by The Visual Geographer.
River geometry
OpenStreetMap
Some river overlay geometry used by The Visual Geographer is derived from OpenStreetMap data. The river dataset is mixed-source, so this notice does not apply to every river.
© OpenStreetMap contributors. OpenStreetMap data is available under the Open Database License (ODbL 1.0).
Indian State and Union Territory boundaries
Survey of India
Indian State and Union Territory boundary highlights use exact source-derived geometry from Survey of India digital boundary data. Separately classified interstate disputed geometries remain neutral and are not assigned to a State or Union Territory.
Source: Survey of India, Government of India.
This digital map implementation proceeds under the Government of India Guidelines for acquiring and producing Geospatial Data and Geospatial Data Services including Maps, dated 15 February 2021.
The raw Survey of India source master is not offered as a user-facing download.
Country boundaries
Natural Earth
Country boundary highlights used by The Visual Geographer include Natural Earth 5.1.1 Admin-0 Countries data. The India country-level outer boundary remains Natural Earth's India POV variant and is separate from the Survey of India State/UT layer.
The project's boundary registry records these datasets as public-domain.
Other datasets
This page covers the OSM-derived river geometry, Survey of India State/UT geometry and Natural Earth country geometry described above. Other content sources and Google Maps attribution are handled separately.