# CER Assessments Map Service (Federal Geospatial Platform)

**Canonical:** https://apis.io/apis/canada-energy-regulator/cer-assessments-map-service/  
**Provider:** Canada Energy Regulator — https://apis.io/providers/canada-energy-regulator/  
**Base URL:** https://maps-cartes.services.geo.ca/server_serveur/rest/services/NRCan/CER_Assessments_EN/MapServer  
**Documentation:** https://open.canada.ca/data/en/dataset/039fbd92-43c2-4805-b210-d65703712e37

CER Assessments Map Service (Federal Geospatial Platform) is one of 3 APIs that [Canada Energy Regulator](https://apis.io/providers/canada-energy-regulator/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Geospatial, Assessments, WMS, OGC, and Open Data. The published artifact set on APIs.io includes an API reference and API documentation.

The CER's Environmental and Socio-economic Assessments (ESA) layer, published through the Government of Canada's Federal Geospatial Platform at maps-cartes.services.geo.ca under the NRCan folder and served in English and French. Two protocols are exposed for the same data and both answered anonymously on 2026-07-27: an Esri ArcGIS REST MapServer (?f=json returned a service description naming the CER as the data owner) and an OGC WMS 1.3.0 endpoint whose GetCapabilities document parsed as valid XML. This is CER data on federal shared infrastructure rather than a CER-operated host, and it is the only place in this review where an open, vendor-neutral international standard (OGC WMS) is used.

## Machine-readable artifacts (5)

- **APIReference** — https://maps-cartes.services.geo.ca/server_serveur/rest/services/NRCan/CER_Assessments_EN/MapServer?f=json
- **Documentation** — https://maps-cartes.services.geo.ca/server_serveur/services/NRCan/CER_Assessments_EN/MapServer/WMSServer?request=GetCapabilities&service=WMS&version=1.3.0
- **Documentation** — https://open.canada.ca/data/en/dataset/039fbd92-43c2-4805-b210-d65703712e37
- **APIReference** — https://raw.githubusercontent.com/api-evangelist/canada-energy-regulator/refs/heads/main/contracts/canada-energy-regulator-cer-assessments-mapserver.json
- **GetCapabilities** — https://raw.githubusercontent.com/api-evangelist/canada-energy-regulator/refs/heads/main/contracts/canada-energy-regulator-cer-assessments-wms-capabilities.xml

## Other Canada Energy Regulator APIs (2)

- [CER ArcGIS Online Feature Services](https://apis.io/apis/canada-energy-regulator/cer-arcgis-feature-services/)
- [CER Open Data via the Open Government Portal CKAN API](https://apis.io/apis/canada-energy-regulator/cer-open-data-ckan/)

## Tags

Geospatial, Assessments, WMS, OGC, Open Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/canada-energy-regulator/cer-assessments-map-service/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/canada-energy-regulator/.