Grand River Information Network
The GRCA offers a variety of maps and data resources directly from the Grand River Information Network (GRIN) website. GRIN guides you to various interactive viewing and data download tools to help you quickly find the information you need.
Listed below is a description of the tools and information you can access via GRIN.
- Applications: Use our interactive mapping applications to create your own maps of areas within the Grand River watershed. Ideal for creating maps of your property, study area, or for reports and school projects.
- Data: GRCA maintains a collection of data Available for download. You can download GRCA's GIS data (vector and raster) using our simple download tools. Data from daily and hourly monitoring stations are also available for download including river levels, flows, and weather conditions.
- Web Services: Our data is also available through web-based Application Programming Interfaces (APIs). These tools are to help provide direct access to GRIN data without the need to download.
Other data sources
The GRIN site also offers data links to other agencies such as Water Survey of Canada, Environment Canada, provincial ministries and municipals. Go to the GRIN - External Resources page for more information.
The GRCA has a collection of static maps and aerial photographs, dating back to the mid-1900s, that are accessible to the public.
- Detailed watershed map poster: Showing the physical and political features of the Grand River watershed, including GRCA parks and properties. (24 x 36 inches - PDF 20 MB, published 2013)
- Printable watershed map: Basic overview map of the watershed with less detail. (11 x 17 inches - PDF 2 MB, published 2008)
- Climate region map: Climate regions of the Grand River watershed. (8.5 x 11 inches - PDF 4 MB, published 2008)
- Forest zones map: Forest zones of the Grand River watershed. (8.5 x 11 inches - PDF 3.5 MB, published 2008)