Overture Maps - Base

**Overview**
The Overture base theme provides the land and water features that are necessary to render a complete basemap. These features are currently derived from the Daylight Earth Tables schema and include the Daylight Coastlines.

- basic classification of features into type, subtype and class where appropriate.
- parsing and normalization of common OSM tags, such as height and ele.
- extraction of consistent OSM tags, such as wikidata to top-level properties.
- direct pass-through of remaining relevant OSM tags.

Current types:

- land: physical representations of land surfaces. Global land derived from the inverse of OSM Coastlines. Translates natural tags from OpenStreetMap.
- land_use: classifications of the human use of a section of land. Translates landuse from OpenStreetMap tag from OpenStreetMap.
- water: physical representations of inland and ocean marine surfaces. Translates natural and waterway tags from OpenStreetMap.

Founded in 2022 under the Joint Development Foundation, Overture Maps Foundation (Overture Maps) is dedicated to the development of reliable, easy-to-use, and interoperable open map data that will power current and next-generation map products. We build this data through a collaborative process that combines technology, data, and support from a wide range of companies. Map data are assembled from multiple sources including members, civic organizations, and open data sources.

Overture's data themes and schema are licensed under CC-BY 4.0. GERS IDs are licensed under CDLA Permissive v 2.0. Data associated with the themes through GERS can carry different licenses. However, if the data associated though GERS with an ODbL licensed theme constitutes a derivative dataset, it must be licensed under ODbL. See OpenStreetMap Community Guidelines for definitions of a derivative database.

**Use cases**
- Data Quality and Cleansing: Clean up your spatial data by checking if its geolocation falls in the right land or water body.
- The Overture base theme provides the land and water features that are necessary to render a complete basemap.

**Additional Insights**
This data is processed, onboarded and maintained by CARTO in collaboration with the Overture Maps Foundation.