Sources
Every dataset, every licence, cited.
An atlas is only as good as what it is drawn from. These are the sources behind every map and study card in AtlasMitra.
Boundary statement
India, as per the Survey of India
India is shown with its full extent as per the Survey of India, including PoK and Aksai Chin. The 36 State and UT polygons are the official extent; India’s outline on the world map is built from them, and neighbouring countries are clipped so that no ground is claimed twice. An automated test walks the whole boundary on every build and fails if any of this is lost.
| Source | Used for | Licence |
|---|---|---|
| Survey of India | India’s official outer boundary and the 36 State/UT polygons, including PoK and Aksai Chin. | Government of India |
| Natural Earth | World countries, rivers, lakes, glaciers and physical regions. | Public domain |
| OpenStreetMap | Courses of 32 Indian rivers that Natural Earth omits, and district boundaries. | © OpenStreetMap contributors, ODbL 1.0 |
| Beck et al. 2023 · GloH2O | Köppen–Geiger climate classes, monthly temperature and precipitation normals, 1991–2020. | CC BY 4.0 |
| NOAA PSL · NCEP/NCAR Reanalysis 1 | January and July sea-level pressure and surface winds, 1991–2020 long-term means. | Public domain |
| RESOLVE Ecoregions 2017 | Natural vegetation biome regions (Dinerstein et al. 2017). | CC BY 4.0 |
| USGS | Major mineral and mineral-fuel deposits of the world (OFR 2005–1294). | Public domain |
| Central Water Commission · India-WRIS | River basins and lengths for the river study cards. | Government of India |
| District administrations | Dams, barrages and river-bank places on each river card, cited per river. | Government of India |
By map layer
| Layer | Source | Licence |
|---|---|---|
| Ocean Currents | Educational illustration referenced against NOAA ocean-currents material | AtlasMitra |
| Climate Regions | Beck et al. (2023), Scientific Data 10, 724 | CC BY 4.0 |
| Temperature | Beck et al. (2023) climatology, GloH2O | CC BY 4.0 |
| Heat Zones | National Geographic Society, “Zone” | Reference |
| Annual Rainfall | Beck et al. (2023) precipitation climatology, GloH2O | CC BY 4.0 |
| Pressure & Winds | NOAA PSL NCEP/NCAR Reanalysis 1, 1991–2020 means | Public domain |
| Natural Vegetation | Dinerstein et al. (2017), RESOLVE Ecoregions | CC BY 4.0 |
| Minerals | USGS, Major mineral deposits of the world (OFR 2005–1294) | Public domain |
| Mineral Fuels | Approximate regional markers digitised from a reviewed school atlas | AtlasMitra |
River study cards cite their own sources (Central Water Commission / India-WRIS and district administrations); each is listed on that river’s page under Rivers of India.
Typefaces
The site is set like an atlas: water names in italic, ranges in wide capitals, places upright. It uses one type family, IBM Plex, which also ships in the app. All of it is free under the SIL Open Font License 1.1.
| Typeface | Used for | Licence |
|---|---|---|
| IBM Plex Serif, IBM | Headings, lead paragraphs, river articles and water names | OFL-1.1 · text |
| IBM Plex Sans, IBM | Body text, navigation, labels and range names | OFL-1.1 · text |
| IBM Plex Mono, IBM | Coordinates and data values | OFL-1.1 · text |
Attribution
Map data © Natural Earth (public domain). River courses and district boundaries include data © OpenStreetMap contributors, available under the Open Database Licence. Climate and vegetation layers are used under CC BY 4.0. Typefaces are listed above.
Spotted an error? Write to contact@atlasmitra.com with the feature and your source, and we will check it.