The Soils Parent Materials raster prediction surface was crated using a Random Forest classifier trained with single component polygons from soils, terrain and ecosystem mapping projects, and 18 topographic predictor layers derived from the provincial 25m DEM. It is a prediction of mode of deposition of the soils parent material. The model was run by Ecoprovince and also enforced topographic constraints on some materials. The results of the Ecoprovince models were compiled into a provincial raster layer. The methodology and results are described in the research paper, Improved Soil Mapping in British Columbia, Canada with Legacy Soil Data and Random Forest Digital Soil Mapping Across Paradigms, Scales and Boundaries, 2016, ISBN : 978-981-10-0414-8 C. Bulmer, M. G. Schmidt, B. Heung, C. Scarpone, J. Zhang, D. Filatow, M. Finvers, S. Berch, S. Smith, DOI 10.1007/978-981-10-0415-5_24. This layer is used in the [Soils Information Finder Tool](https://catalogue.data.gov.bc.ca/dataset/af8c3ff1-c64c-4ee5-9412-f02a85bbbfec).

Terrestrial Ecosystem Mapping (TEM) Project Boundaries (STE_TEM_PROJECT_BOUNDARIES_SVW) contains boundaries (study areas) and attributes describing each TEM project (project level metadata), plus links to the locations of other data associated with the project (e.g., reports, polygon datasets, plotfiles, field data, legends). This layer is derived from the [STE_TEI_PROJECT_BOUNDARIES_SP](https://catalogue.data.gov.bc.ca/dataset/1313fac7-2ea1-4c6b-995b-bd421b7ec3c6) layer by filtering on the PROJECT_TYPE attribute. Project Types include: TEM, NEM, TEMNSS, NEMNSS, TEMPRE, NEMPRE, TEMSEI, TEMSET, TEMTSM, TEMWHR, TEMSDM, TEMPRW, NEMPRW, and NEMSEI. TEM project boundaries should be used in conjunction with TEM detailed inventory polygons which divide the landscape into units according to a variety of ecological features including climate, physiography, surficial material, bedrock geology, soils and vegetation. TEM inventory polygons with full Resources Information Standards Committee (RISC) attributes can be accessed through the [Terrestrial Ecosystem Information (TEI) Data Distribution Packages](https://catalogue.data.gov.bc.ca/dataset/8fd15e4e-e7b1-4566-81d1-1ff8947bfd46). TEM inventory polygons with simplified and amalgamated (concatenated) RISC attributes can be accessed through the [Terrestrial Ecosystem Mapping (TEM) Detailed Polygons with Short Table Attribute Table Spatial View](https://catalogue.data.gov.bc.ca/dataset/0a83163b-a62f-4ce6-a9a1-21c228b0c0a3). **Current version**: v12 (2026-06-22)

Terrain Mapping (TER) Project Boundaries (STE_TER_PROJECT_BOUNDARIES_SVW) contains boundaries (study areas) and attributes describing each TER project (project level metadata), plus links to the locations of other data associated with the project (e.g., reports, polygon datasets, plotfiles, legends). This layer is derived from the [STE_TEI_PROJECT_BOUNDARIES_SP](https://catalogue.data.gov.bc.ca/dataset/1313fac7-2ea1-4c6b-995b-bd421b7ec3c6) layer by filtering on the PROJECT_TYPE attribute. Project types include: TEM, TEMNSS, TEMPRE, TEMSEI, TEMSET, TEMTSM, TSM, TSMREC, TSMDET, TIM, TBS, TBT, TIMSOI, TEMWHR, TEMSDM, TEMPRW, and PEMTBT. TER project boundaries should be used in conjunction with TER detailed inventory polygons which divide the landscape into units according to surficial materials, landforms and geomorphological processes using the Terrain Classification System for British Columbia. TER inventory polygons with full Resources Information Standards Committee (RISC) attributes can be accessed through the [Terrestrial Ecosystem Information (TEI) Data Distribution Packages](https://catalogue.data.gov.bc.ca/dataset/8fd15e4e-e7b1-4566-81d1-1ff8947bfd46). TER inventory polygons with simplified and amalgamated (concatenated) RISC attributes can be accessed through the [Terrain Mapping (TER) Polygon Attributes](https://catalogue.data.gov.bc.ca/dataset/caf1ad28-9bd9-4b41-b2f8-928fff115855). Further subsetted data can be found through the [Terrain Stability Mapping (TSM)](https://catalogue.data.gov.bc.ca/dataset/d800cbc8-0de6-4d57-a3f9-88bcfbdc0769), [Terrain Inventory Mapping (TIM)](https://catalogue.data.gov.bc.ca/dataset/3f6280a0-11d6-430f-92c5-a4a66023e6a1), and [Bioterrain Mapping (TBT)](https://catalogue.data.gov.bc.ca/dataset/06121ed8-0a75-4a76-b645-182f94418571) records. **Current version**: v12 (2026-06-22)